51 4081P 5081 T Liq Manual 5081T

User Manual: 5081-T

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Instruction Manual
LIQ_MAN_5081T/rev.G
January 2015

5081-T
Two-Wire Toroidal Conductivity Transmitter

ESSENTIAL INSTRUCTIONS
READ THIS PAGE BEFORE PROCEEDING!
Rosemount Analytical designs, manufactures, and tests its products to meet many national and international
standards. Because these instruments are sophisticated technical products, you must properly install, use, and
maintain them to ensure they continue to operate within their normal specifications. The following instructions
must be adhered to and integrated into your safety program when installing, using, and maintaining Rosemount
Analytical products. Failure to follow the proper instructions may cause any one of the following situations to
occur: Loss of life; personal injury; property damage; damage to this instrument; and warranty invalidation.
• Read all instructions prior to installing, operating, and servicing the product. If this Instruction Manual is not the
correct manual, telephone 1-800-654-7768 and the requested manual will be provided. Save this Instruction
Manual for future reference.
• If you do not understand any of the instructions, contact your Rosemount representative for clarification.
• Follow all warnings, cautions, and instructions marked on and supplied with the product.
• Inform and educate your personnel in the proper installation, operation, and maintenance of the product.
• Install your equipment as specified in the Installation Instructions of the appropriate Instruction Manual and per
applicable local and national codes. Connect all products to the proper electrical and pressure sources.
• To ensure proper performance, use qualified personnel to install, operate, update, program, and maintain the
product.
• When replacement parts are required, ensure that qualified people use replacement parts specified by
Rosemount. unauthorized parts and procedures can affect the product’s performance and place the safe
operation of your process at risk. Look alike substitutions may result in fire, electrical hazards, or improper
operation.
• Ensure that all equipment doors are closed and protective covers are in place, except when maintenance is
being performed by qualified persons, to prevent electrical shock and personal injury.

CAUTION
If a Model 375 universal Hart Communicator is used with these transmitters, the software within the Model 375 may require
modification. If a software modification is required, please contact your local Emerson Process Management Service Group
or National Response Center at 1-800-654-7768.
®

About This Document
This manual contains instructions for installation and operation of the Model 5081-T Two-Wire
Conductivity Transmitter. The following list provides notes concerning all revisions of this document.

Rev. Level

Date

1/05

B
C

5/05
10/05

d
E
F
G

2/06
1/11
11/12
7/14

Emerson Process Management
2400 Barranca Parkway
Irvine, CA 92606 uSA
Tel: (949) 757-8500
Fax: (949) 474-7250
http://www.raihome.com
© Rosemount Analytical Inc. 2014

Notes
This is the initial release of the product manual. The manual has been
reformatted to reflect the Emerson documentation style and updated to
reflect any changes in the product offering. This manual contains
information on HART Smart and FouNdATIoN Fieldbus versions of 5081-T.
Fix LEd font on pages 4, 30, 34, 35, 39.
Add instructions to enable autoranging or fixed measurement renges on
page 50.
Add FISCo agency certifications drawings, pp. 30-36.
update enclosure specifications, © info and dnv logo.
Add Fieldbus specifications, update ITK revision and CE certifications.
Revised Fig. 3-6 on p. 17 for EMI/RFI immunity protection installations

MODEL 5081-T

TABLE OF CONTENTS

5081-T
TwO-wIRE TRANSMITTER
TABLE OF CONTENTS
Section
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.8

Title
DESCRIPTION AND SPECIFICATIONS ................................................................
Features and Applications........................................................................................
Specifications...........................................................................................................
Hazardous Location Approval ..................................................................................
Transmitter display during Calibration and Programming.......................................
Infrared Remote Controller ......................................................................................
HART Communications ...........................................................................................
FouNdATIoN Fieldbus...............................................................................................
General Specifications ............................................................................................
Asset Management Solutions .................................................................................

Page
1
1
2
3
4
4
5
6
6
7

2.0
2.1
2.2
2.3
2.4
2.5

INSTALLATION .......................................................................................................
unpacking and Inspection........................................................................................
orienting the display Board .....................................................................................
Mechanical Installation.............................................................................................
Power Supply/Current Loop Wiring for Model 5081-T-HT .......................................
Power Supply Wiring for Model 5081-T-FF/FI..........................................................

8
8
8
8
12
13

3.0
3.1
3.2

wIRING....................................................................................................................
Sensor Wiring ..........................................................................................................
Electrical Installation ................................................................................................

14
14
16

4.0
4.1
4.2
4.3

INTRINSICALLy SAFE AND ExPLOSION PROOF INSTALLATIONS..................
Intrinsically Safe and Explosion-Proof Installation for Model 5081-T-HT .................
Intrinsically Safe and Explosion-Proof Installation for Model 5081-T-FF .................
Intrinsically Safe and Explosion-Proof Installation for Model 5081-T-FI ..................

19
19
24
28

5.0
5.1
5.2
5.3
5.4
5.5
5.6
5.7
5.8
5.9

DISPLAy AND OPERATION ...................................................................................
displays ...................................................................................................................
Infrared Remote Controller (IRC) — Key Functions ................................................
Quick Start for Model 5081-T-HT .............................................................................
Quick Start for Model 5081-T-FF/FI .........................................................................
Menu Tree................................................................................................................
diagnostic Messages...............................................................................................
default Setting .........................................................................................................
Security ....................................................................................................................
using Hold ...............................................................................................................

34
34
35
36
36
37
37
38
39
40

6.0
6.1
6.2

START-UP AND CALIBRATION .............................................................................
Accessing the Calibrate Menu .................................................................................
Calibrate Menu.........................................................................................................

42
42
43

....................................................................................Continued on following page

MODEL 5081-T

TABLE OF CONTENTS

TABLE OF CONTENTS CONT’D

7.0
7.1
7.2
7.3
7.4
7.5
7.6
7.7
7.8

PROGRAMMING.....................................................................................................
General ....................................................................................................................
output ......................................................................................................................
Temp ........................................................................................................................
display .....................................................................................................................
HART .......................................................................................................................
Setup Cust ...............................................................................................................
Range ......................................................................................................................
default......................................................................................................................

44
44
45
49
50
51
52
53
53

8.0

FOUNDATION FIELDBUS OPERATION ................................................................

9.0
9.1
9.2
9.3

OPERATION wITH MODEL 375.............................................................................
Note on Model 375 or 475 Communicator ...............................................................
Connecting the Communicator ................................................................................
operation .................................................................................................................

55
55
55
56

10.0
10.1
10.2
10.3
10.4
10.5
10.6
10.7
10.8

DIAGNOSIS AND TROUBLESHOOTING...............................................................
overview ..................................................................................................................
Fault Conditions .......................................................................................................
diagnostic Messages...............................................................................................
Quick Troubleshooting Guide...................................................................................
Systematic Troubleshooting.....................................................................................
RTd Resistance Values ...........................................................................................
Warning and Fault Messages ..................................................................................
Troubleshooting When a Fault or Warning Message is Showing ............................

71
71
73
74
75
76
77
78
79

11.0
11.1
11.2
11.3

MAINTENANCE ......................................................................................................
overview ..................................................................................................................
Preventative Maintenance .......................................................................................
Corrective Maintenance ...........................................................................................

82
82
82
82

12.0
12.1
12.2
12.3
12.4

THEORy OF OPERATION .....................................................................................
overview ..................................................................................................................
Conductivity .............................................................................................................
HART Communication .............................................................................................
output Logic.............................................................................................................

84
84
84
84
84

13.0

RETURN OF MATERIAL.........................................................................................

MODEL 5081-T

TABLE OF CONTENTS

LIST OF FIGURES
Number
1-1
1-2
1-3
1-4
1-5
2-1
2-2
2-3
2-4
2-5
2-6
3-1
3-2
3-3
3-4
3-5
3-6
3-7
4-1
4-2
4-3
4-4
4-5
4-6
4-7
4-8
4-9
4-10
4-11
4-12
4-13
4-14
4-15
4-16

Title
Transmitter display during Calibration and Programming .......................................
Infrared Remote Controller.......................................................................................
HART Communicator ...............................................................................................
Configuring Model 5081-T Transmitter with Foundation Fieldbus ............................
AMS Main Menu Tools .............................................................................................
Mounting the Model 5081-T Transmitter on a Flat Surface ......................................
using the Pipe Mounting Kit to Attach the Model 5081-T to a pipe ..........................
Load/Power Supply Wiring Requirements................................................................
Model 5081-T-HT Power Wiring details ...................................................................
Typical Fieldbus Network Electrical Wiring Configuration ........................................
Model 5081-T-FF Power Wiring details ...................................................................
Wiring Model 5081-T-HT ..........................................................................................
Power Supply/Current Loop Wiring for Model 5081-T-HT........................................
Power Supply/Current Loop Wiring for Model 5081-T-FF ........................................
Power Supply and Sensor Wiring for Model 5081-T ................................................
Wiring Model 242 Sensor to Model 5081-T Transmitter ..........................................
Wiring Models 222, 225, 226, 228, 242, 247 to Model 5081-T Transmitter.................
Wiring Models 222, 225, 226, 228 to Model 5081-T Transmitter ................................
Model 5081-T-HT Infrared Remote Control — CSA, FM, & ATEX approvals...........
Model 5081-T-FF Infrared Remote Control — CSA, FM, & ATEX approvals ...........
FM Explosion-Proof Installation for Model 5081-T-HT .............................................
FM Intrinsically Safe Installation for Model 5081-T-HT.............................................
CSA Intrinsically Safe Installation for Model 5081-T-HT...........................................
ATEX Intrinsically Safe Label for Model 5081-T-HT .................................................
FM Explosion-Proof Installation for Model 5081-T-FF..............................................
FM Intrinsically Safe Installation for Model 5081-T-FF .............................................
CSA Intrinsically Safe Installation for Model 5081-T-FF ...........................................
ATEX Intrinsically Safe Label for Model 5081-T-FF .................................................
FM Explosion-Proof Installation for Model 5081-T-FI ...............................................
FM Intrinsically Safe Label for Model 5081-T-FI.......................................................
FM Intrinsically Safe Installation for Model 5081-T-FI ..............................................
CSA Intrinsically Safe Label for Model 5081-T-FI.....................................................
CSA Intrinsically Safe Installation for Model 5081-T-FI ............................................
ATEX Intrinsically Safe Label for Model 5081-T-FI...................................................

iii

Page
4
4
5
6
7
9
10
12
12
13
13
14
15
15
15
16
17
18
19
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33

MODEL 5081-T

TABLE OF CONTENTS

LIST OF FIGURES - CONT’D
Number
5-1
5-2
5-3
5-4
5-5
6-1
6-2
8-1
9-1
9-2
9-3
10-1
10-2
10-3
10-4
10-5
11-1
11-2

Title
Process display Screen ...........................................................................................
Program display Screen ..........................................................................................
Infrared Remote Controller.......................................................................................
Menu Tree for Model 5081-T-HT ..............................................................................
Menu Tree for Model 5081-T-FF .............................................................................
Menu Tree ...............................................................................................................
Current output Calibration .......................................................................................
Functional Block diagram for the Model 5081-T with FouNdATIoN Fieldbus..........
Connecting the HART Communicator ......................................................................
5081-T-HT HART/Model 375 Menu Tree..................................................................
5081-T-FF/FI Model 375 Menu Tree ........................................................................
diagnose Menu Segments .......................................................................................
disabling Fault Annunciation ....................................................................................
Warning Annunciation...............................................................................................
Troubleshooting Flow Chart .....................................................................................
Conductivity determination ......................................................................................
Hold Annunciation ....................................................................................................
5081-T Exploded View .............................................................................................

Page
34
34
35
38
39
42
44
54
55
57
58
71
73
73
76
77
82
83

LIST OF TABLES
Number
5-1
5-2
6-1
10-1
10-2
10-3
10-4
11-1

Title
default Settings fro Model 5081-T-FF ......................................................................
default Settings fro Model 5081-T-HT......................................................................
Calibrate Menu Mnemonics......................................................................................
diagnostic Variables Mnemonics .............................................................................
diagnostic Fault Messages ......................................................................................
Quick Troubleshooting Guide ...................................................................................
RTd Resistance Values............................................................................................
Model 5081-T Replacement Parts and Accessories ................................................

Page
40
41
45
72
74
75
77
83

MODEL 5081-T

SECTION 1.0
DESCRIPTION AND SPECIFICATIONS

SECTION 1.0
DESCRIPTION AND SPECIFICATIONS
• CHoICE oF CoMMuNICATIoN PRoToCoL: HART® or FouNdATIoN Fieldbus.
• LARGE, EASY-To-REAd two-line display shows the process measurement and temperature.
• SIMPLE MENu STRuCTuRE.
• RoBuST TYPE 4X ENCLoSuRE.
• INTRINSICALLY SAFE dESIGN allows the transmitter to be used in hazardous environments
(with appropriate safety barriers).
•
•
•
•
•

NoN-VoLATILE MEMoRY retains program settings and calibration data during power failures.
MEASuRES CoNduCTIVITY, % CoNCENTRATIoN, PPM, oR CuSToM CuRVE VARIABLE.
AuToMATIC TC RECoGNITIoN simplifies start up.
AuToMATIC/MANuAL TEMPERATuRE CoMPENSATIoN ensures accurate monitoring and control.
AuToMATIC CoMPENSATIoN FoR SENSoR CABLE RESISTANCE improves accuracy of high
conductivity/ low resistivity measurements.
• BuILT-IN PERCENT CoNCENTRATIoN CuRVES INCLudE 0-15% NaoH, 0-16% HCl, 0-30%
and 96-99.7% H2So4.

1.1 FEATURES AND APPLICATIONS
The Model 5081-T can be used to measure conductivity
in a variety of process liquids. The 5081 is compatible
with most Rosemount Analytical sensors. See the
Specifications section for details.
The transmitter has a rugged, weatherproof, corrosionresistant enclosure (Type 4X and IP65) of epoxy-painted
aluminum. The enclosure also meets explosion-proof
standards.
The transmitter has a two-line seven-segment display.
The main measurement appears in 0.8-inch (20 mm) high
numerals. The secondary measurement, temperature
(and pH if free chlorine is being measured), appears in
0.3-inch (7 mm) high digits.
Two digital communication protocols are available: HART
(model option -HT) and FouNdATIoN Fieldbus (model
options -FF and FI). digital communications allows
access to AMS (Asset Management Solutions). use AMS
to set up and configure the transmitter, read process variables, and troubleshoot problems from a personal computer or host anywhere in the plant.

A handheld infrared remote controller or the HART and
FouNdATIoN Fieldbus Model 375 and 475 communicator
can also be used for programming and calibrating the
transmitter. The remote controller works from as far away
as six feet.
Housed in a rugged Type 4X and case, the 5081T measures conductivity or resistivity in the harshest environments. Transmitter can also be configured, using the
"Custom Curve" feature, to measure ppm, %, or a no unit
variable according to a programmable conductivity vs. variable curve. The transmitter will automatically recognize the
type of RTd (Pt100 or Pt1000) being used. Measurements
are automatically corrected for the resistance of the sensor
cable to improve accuracy of high conductivity readings.
Temperature compensation choices are linear slope correction or none (display of raw conductivity.

MODEL 5081-T

SECTION 1.0
DESCRIPTION AND SPECIFICATIONS

1.2 SPECIFICATIONS
1.2.1 GENERAL SPECIFICATIONS
Housing: Cast aluminum with epoxy coating. Type 4X
(IP65). Neoprene o-ring cover seals.
Dimensions: 160.5 mm x 175.3 mm x 161.3 mm (6.3 in.
x 6.9 in. x 6.4 in.) See drawing.
Conduit Openings: ¾-in. FNPT
Ambient Temperature: -4 to 149°F (-20 to 65°C)
Storage Temperature: -22 to 176°F (-30 to 80°C)
Relative Humidity: 0 to 95% (non-condensing)
weight/Shipping weight: 10 lb/10 lb (4.5/5.0 kg)
Display: Two-line LCd; first line shows process variable
(pH, oRP, conductivity, % concentration, oxygen,
ozone, or chlorine), second line shows process temperature and output current. For pH/chlorine combination,
the second line can be toggled to show pH. Fault and
warning messages, when triggered, alternate with
temperature and output readings.

HART option

FOUNDATION FIELDBUS —
Power & Load Requirements: A power supply voltage of
9-32 Vdc at 22 mA is required.

during calibration and programming, messages and
prompts appear in the second line.

1.2.2 FUNCTIONAL SPECIFICATIONS
Calibration: Calibration is easily accomplished by
immersing the sensor in a known solution and entering its
value.
Automatic Temperature Compensation:
3-wire Pt 100 RTd
Conductivity: 0 to 200°C (32 to 392°F)
% Concentration: 0 to 100°C (32 to 212°F)

Temperature resolution: 0.1°C

Diagnostics: The internal diagnostics can detect:

Hazardous Location Approval: For details, see specifications for the measurement of interest.

Calibration Error
Zero Error
Temperature Slope Error Low Temperature Error
High Temperature Error Sensor Failure
Line Failure
CPu Failure
RoM Failure
Input Warning
once one of the above is diagnosed, the LCd will display
a message describing the failure/default detected.

First line: 7 segment LCd, 0.8 in. (20 mm) high.
Second line: 7 segment LCd, 0.3 in. (7mm) high.
display board can be rotated 90 degrees clockwise or
counterclockwise.

RFI/EMI: EN-61326
Digital Communications:
HART —
Power & Load Requirements:
Supply voltage at the transmitter terminals should be at
least 12 Vdc. Power supply voltage should cover the voltage drop on the cable plus the external load resistor
required for HART communications (250 W minimum).
Minimum power supply voltage is 12 Vdc. Maximum power
supply voltage is 42.4 Vdc (30 Vdc for intrinsically safe
operation). The graph shows the supply voltage required to
maintain 12 Vdc (upper line) and 30 Vdc (lower line) at the
transmitter terminals when the current is 22 mA.
Analog Output: Two-wire, 4-20 mA output with superimposed HART digital signal. Fully scalable over the
operating range of the sensor.
Output accuracy: ±0.05 mA

Digital Communications:
HART: PV, SV, and TV assignable to measurement
(conductivity, resistivity, or concentration), temperature, and raw conductivity. Raw conductivity is measured conductivity before temperature correction.
Fieldbus: Three AI blocks assignable to measurement
(conductivity, resistivity, or concentration), temperature, and raw conductivity. Raw conductivity is measured conductivity before temperature correction.

MODEL 5081-T

SECTION 1.0
DESCRIPTION AND SPECIFICATIONS

IECEx BAS 09.0159X

1.2.3 TRANSMITTER SPECIFICATIONS @ 25°C
Measured Range*: 50 to 2,000,000 µS/cm (see chart)
Accuracy: ± 1.0% of reading
Repeatability: ± 0.25% of reading
Stability: 0.25% of output range/month,
non-cumulative
Ambient Temperature Coefficient: ± 0.2% of FS/°C
Temperature Slope Adjustment: 0-5%/° C
% Concentration Ranges:
Sodium Hydroxide: 0 to 15%
Hydrochloric Acid: 0 to 16%
Sulfuric Acid: 0 to 25% and 96 to 99.7%

Ex ia IIC T4 Ga

ATEx

ATEx and IECEx Special Conditions for Use: The model 5081
enclosure is made of aluminum alloy and is given a protective
polyurethane paint finish. However, care should be taken to protect
it from impact or abrasion if located in a zone 0 hazardous area.

1.2.4 LOOP SPECIFICATIONS
Loop Accuracy: With a standard Model 228 or 225 sensor with 20' cable, laboratory accuracy at 25°C can be as
good as ± 2% of reading and ± 50 µS/cm.
To achieve optimum performance, standardize the sensor in the process at the conductivity and temperature of
interest.
Results under real process conditions, at different temperatures, or using other sensors may differ from above.
RTD accuracy: utilizing a perfect 100 ohm RTd after 1
point temperature standardization, temperature reading
can be as good as ± 0.5°C.

RECOMMENDED SENSORS:
Model
Model
Model
Model
Model

222
225
226
228
242*

1180
II 1 G
Baseefa03ATEX0399
EEx ia IIC T4
Tamb = -20°C to +65°C

Flow-Through
Clean-In-Place (CIP)
Submersion/Insertion
Submersion/Insertion/Retractable
Flow-Through

Non-Incendive:
Class I, div. 2, Groups A-d
dust Ignition Proof
Class II & III, div. 1, Groups E-G
Type 4X Enclosure
Class I, div. 2, Groups A-d
Suitable for
Class II, div. 2, Groups E-G
T4 Tamb = 70°C
Explosion-Proof:
Class I, div. 1, Groups B-d
Class II, div. 1, Groups E-G
Class III, div. 1
Class I, Groups B-d
Class II, Groups E-G
Class III
Tamb = 65°C max

*no I.S. approval for loops of 5081-T with 242-06 or 242-08

1.3 HAzARDOUS LOCATION APPROvAL
Intrinsic Safety:
Class I, II, III, div. 1
Groups A-G
T4
Tamb = 70°C
Exia Entity
Class I, Groups A-d
Class II, Groups E-G
Class III
T4
Tamb = 70°C

RECOMMENDED RANGES FOR TOROIDAL SENSORS
Conductivity Sensor
Model Number
Nominal Cell Constant
Minimum Conductivity (mS/cm)
Maximum Conductivity (mS/cm)

225
3.0

222 (1in.)
6.0

222 (2 in.)
4.0

242
*

226
1.0
50

228
3.0
200

200

500

100*

1,000,000

2,000,000

2,000,000*

* Model 242 values depend on sensor configuration and wiring.

MODEL 5081-T

1.4 TRANSMITTER DISPLAy DURING
CALIBRATION AND PROGRAMMING
(FIGURE 1-1)
1. Continuous display of conductivity or resistivity
readings.

SECTION 1.0
DESCRIPTION AND SPECIFICATIONS

1
F
A
u
L
T

10
.00

H
o
L
d

2. units: µS/cm, mS/cm, ppm, or %.
3. Current menu section appears here.

4. Submenus, prompts, and diagnostic readings
appear hear.

mS/cm

CALIBRATE PRoGRAM dIAGNoSE

CALIbrAtE

5. Commands available in each submenu or at
each prompt appear here.
6. Hold appears when the transmitter is in hold.

ExIT

ENTER

7. Fault appears when the transmitter detects a
sensor or instrument fault.
8.

FIGURE 1-1. TRANSMITTER DISPLAy DURING
CALIBRATION AND PROGRAMMING

The program display screen allows access to calibration and
programming menus.

1.5 INFRARED REMOTE CONTROLLER
(FIGURE 1-2)

1. Pressing a menu key allows the user access to
calibrate, program, or diagnostic menus.
2. Press ENTER to store data and settings. Press
NEXT to move from one submenu to the next.
Press EXIT to leave without storing changes.
3. use the editing arrow keys to scroll through lists
of allowed settings or to change a numerical setting to the desired value.

4. Pressing HoLd puts the transmitter in hold and
sends the output current to a pre-programmed
value. Pressing RESET causes the transmitter
to abandon the present menu operation and
return to the main display.

FIGURE 1-2. INFRARED REMOTE CONTROLLER

MODEL 5081-T

SECTION 1.0
DESCRIPTION AND SPECIFICATIONS

1.6 HART COMMUNICATIONS
1.6.1 OvERvIEw OF HART COMMUNICATION
HART (highway addressable remote transducer) is a digital communication system in which two frequencies are superimposed on the 4 to 20 mA output signal from the transmitter. A 1200 Hz sine wave represents the digit 1, and a 2400 Hz
sine wave represents the digit 0. Because the average value of a sine wave is zero, the digital signal adds no dc component to the analog signal. HART permits digital communication while retaining the analog signal for process control.
The HART protocol, originally developed by Fisher-Rosemount, is now overseen by the independent HART
Communication Foundation. The Foundation ensures that all HART devices can communicate with one another. For more
information about HART communications, call the HART Communication Foundation at (512) 794-0369. The internet
address is http://www.hartcomm.org.
1.6.2 HART INTERFACE DEvICES
HART communicators allow the user to view measurement data (pH, oRP and temperature), program the transmitter, and
download information from the transmitter for transfer to a computer for analysis. downloaded information can also be sent
to another HART transmitter. Either a hand-held communicator, such as the Rosemount Model 375, or a computer can be
used. HART interface devices operate from any wiring termination point in the 4 - 20 mA loop. A minimum load of 250 ohms
must be present between the transmitter and the power supply. See Figure 1-3.
If your communicator does not recognize the Model 5081-T transmitter, the device description library may need updating.
Call the manufacturer of your HART communication device for updates.

4-20 mA + digital
250
ohm

Model 5081-T-HT
Two-wire
Transmitter

Control System

Hand Held
Communicator
(“Configurator”)

Bridge

Computer

FIGURE 1-3. HART Communicators.
Both the Rosemount Model 375 (or 475) and a computer can be used to communicate
with a HART transmitter. The 250 ohm load (minimum) must be present between the
transmitter and the power supply.

MODEL 5081-T

SECTION 1.0
DESCRIPTION AND SPECIFICATIONS

1.7 FOUNDATION FIELDBUS
Figure 1-4 shows a 5081-T-FF being used to measure conductivity. The figure also shows three ways in which Fieldbus
communication can be used to read process variables and configure the transmitter.

FIGURE 1-4. CONFIGURING MODEL 5081-T TRANSMITTER wITH FOUNDATION FIELDBUS

1.8 GENERAL SPECIFICATIONS
Model: 5081-T-FF Fieldbus Transmitter
Type: Toroidal Conductivity Transmitter
Device ITK Profile: 6 (Released for ITK 6.0.0 / 6.0.1)
Manufacturer Identification (MANUFAC_ID): 0x524149
Device Type (DEv_TyPE): 0x4084
Device Revision (DEv_REv): 0x03
Linkmaster: Yes
Number of Link Objects: 20
vCR’s supported: 20
Mandatory Features:
• Resource Block
• Alarm and Events
• Function Block Linking
• Trending
• Multi-Bit Alert Reporting
• Field diagnostics
Additional Features:
• Common Software download
• Block Instantiation
6

•
•
•
•
•

Supports deltaV Auto Commissioning
Supports deltaV Auto Replacement
Supports deltaV Firmware Live download
PlantWeb Alerts with re-annunciation / multibit
Supports Easy Configuration Assistant

Function Blocks (Execution Time):
• 4 – Analog Input Blocks (15 mseconds)
• AI Block Channels:
Channel 1: Conductivity, Resistivity, Concentration
Channel 2: Temperature
Channel 3: Raw Conductivity
• Proportional Integral derivative (25 mseconds)
Power:
• Two Wire device; Fieldbus Polarity Insensitive
• Current draw: 21 mA
• device Certifications: IS / FISCo
• Maximum certified input Voltage for IS: 30V
• Maximum certified input current for IS: 300mA
• Maximum certified input power for IS: 1.3W
• Internal Capacitance (Ci): 0 nF
• Internal Inductance (Li): 0 μH

MODEL 5081-T

SECTION 1.0
DESCRIPTION AND SPECIFICATIONS

FIGURE 1-5. AMS MAIN MENU TOOLS

1.9 ASSET MANAGEMENT SOLUTIONS
Asset Management Solutions (AMS) is software that helps plant personnel better monitor the performance of analytical
instruments, pressure and temperature transmitters, and control valves. Continuous monitoring means maintenance personnel can anticipate equipment failures and plan preventative measures before costly breakdown maintenance is
required.
AMS uses remote monitoring. The operator, sitting at a computer, can view measurement data, change program settings,
read diagnostic and warning messages, and retrieve historical data from any HART-compatible device, including the Model
5081-T transmitter. Although AMS allows access to the basic functions of any HART compatible device, Rosemount
Analytical has developed additional software for that allows access to all features of the Model 5081-T transmitter.
AMS can play a central role in plant quality assurance and quality control. using AMS Audit Trail, plant operators can track
calibration frequency and results as well as warnings and diagnostic messages. The information is available to Audit Trail
whether calibrations were done using the infrared remote controller, the Model 375 HART communicator, or AMS software.
AMS operates in Windows 95. See Figure 1-5 for a sample screen. AMS communicates through a HART-compatible
modem with any HART transmitters, including those from other manufacturers. AMS is also compatible with
FouNdATIoNÔ Fieldbus, which allows future upgrades to Fieldbus instruments.
Rosemount Analytical AMS windows provide access to all transmitter measurement and configuration variables. The
user can read raw data, final data, and program settings and can reconfigure the transmitter from anywhere in the plant.

MODEL 5081-T

SECTION 2.0
INSTALLATION

SECTION 2.0
INSTALLATION
2.1
2.2
2.3
2.4
2.5

Unpacking and Inspection
Orienting the Display Board
Mechanical Installation
Power Supply/Current Loop — Model 5081-T-HT
Power Supply wiring for Model 5081-T-FF/FI

2.1 UNPACKING AND INSPECTION
Inspect the shipping container. If it is damaged, contact the shipper immediately for instructions. Save the box. If there is
no apparent damage, remove the transmitter. Be sure all items shown on the packing list are present. If items are missing, immediately notify Rosemount Analytical.
Save the shipping container and packaging. They can be reused if it is later necessary to return the transmitter to the factory.

2.2 ORIENTING THE DISPLAy BOARD
The display board can be rotated 90 degrees, clockwise or counterclockwise, from the original position. To reposition the
display:
1. Loosen the cover lock nut until the tab disengages from the circuit end cap. unscrew the cap.
2. Remove the three bolts holding the circuit board stack.
3. Lift and rotate the display board 90 degrees, clockwise or counterclockwise, into the desired position.
4. Position the display board on the stand offs. Replace and tighten the bolts.
5. Replace the circuit end cap.

2.3 MECHANICAL INSTALLATION
2.3.1 General information
1. The transmitter tolerates harsh environments. For best results, install the transmitter in an area where temperature
extremes, vibrations, and electromagnetic and radio frequency interference are minimized or absent.
2. To prevent unintentional exposure of the transmitter circuitry to the plant environment, keep the security lock in place
over the circuit end cap. To remove the circuit end cap, loosen the lock nut until the tab disengages from the end cap,
then unscrew the cover.
3. The transmitter has two 3/4-inch conduit openings, one on each side of the housing. Run sensor cable through the left
side opening (as viewed from the wiring terminal end of the transmitter) and run power wiring through the right side
opening.
4. use weathertight cable glands to keep moisture out of the transmitter.
5. If conduit is used, plug and seal the connections at the transmitter housing to prevent moisture from getting inside the
transmitter.
NOTE
Moisture accumulating in the transmitter housing can affect the performance of the transmitter and may void the warranty.
6. If the transmitter is installed some distance from the sensor, a remote junction box with preamplifier in the junction box
or in the sensor may be necessary. Consult the sensor instruction manual for maximum cable lengths.

MODEL 5081-T

SECTION 2.0
INSTALLATION

2.3.2 Mounting on a Flat Surface.
See Figure 2-1.

MILLIMETER
INCH

FIGURE 2-1. Mounting the Model 5081-T Toroidal Conductivity Transmitter on a Flat Surface

MODEL 5081-T

SECTION 2.0
INSTALLATION

2.3.3 Pipe Mounting.
See Figure 2-2. The pipe mounting kit (PN 2002577) accommodates 1-1/2 to 2 in. pipe.

MILLIMETER
INCH

dWG. No.

40308104

REV.

dWG. No.

40308103

REV.

FIGURE 2-2. Using the Pipe Mounting Kit to Attach the Model 5081-T Conductivity Transmitter to a Pipe
10

MODEL 5081-T

SECTION 2.0
INSTALLATION

2.3.4 Inductive Loops.
The Model 5081-T conductivity transmitter is designed to make accurate measurements while in contact with the process
stream. Measurements can also be tailored to high temperature and/or high pressure streams.
2.3.5 Sensor Selection.
All Rosemount Analytical contacting conductivity sensors with PT100 RTd or PT1000 RTd are compatible with the Model
5081-T transmitter. Please refer to Figures 3-5 thru 3-7 for appropriate sensor to transmitter wiring. The sensor cable
should be routed through the left inlet closest to the connector.
Choose an inductive conductivity sensor that is appropriate for your process conditions and range of conductivity measurement.

TABLE 2-1. Model 5081-T Sensor Selection
RECOMMENDED SENSORS:

RECOMMENDED RANGES FOR TOROIDAL SENSORS
Conductivity Sensor
Model Number
Nominal Cell Constant
Min. Conductivity (mS/cm)
Max. Conductivity (mS/cm)

226
1.0
50
1,000,000

228
3.0
200
2,000,000

225
3.0
200
2,000,000

222 (1in.)
6.0
500
2,000,000

222 (2 in.)
4.0
500
2,000,000

242
*
100*
2,000,000*

* Model 242 values depend on sensor configuration and wiring.

NoTE: Values shown are for 25°C conductivity with a temperature slope of 2% per
degree C. The maximum range value will be lower for solutions with a higher
temperature slope. Minimum conductivity depends on sensor.

Model 222 Flow-Through
Model 225 Clean-In-Place (CIP)
Model 226 Submersion/
Insertion
Model 228 Submersion/
Insertion/
Retractable
Model 242 Flow-Through*
* Model 242-06 or 242-08 with 5081T
do not have Intrinsically Safe
approvals.

MODEL 5081-T

2.4

SECTION 2.0
INSTALLATION

POwER SUPPLy/CURRENT LOOP
— MODEL 5081-T-HT

2.4.1 Power Supply and Load Requirements.
Refer to Figure 2-3.
The minimum power supply voltage is 12.5 Vdc
and the maximum is 42.4 Vdc. The top line on the
graph gives the voltage required to maintain at
least 12.5 Vdc at the transmitter terminals when
the output signal is 22 mA. The lower line is the
supply voltage required to maintain a 30 Vdc terminal voltage when the output signal is 22 mA.
The power supply must provide a surge current during the first 80 milliseconds of start-up. For a 24 Vdc
power supply and a 250 ohm load resistor the surge
current is 40 mA. For all other supply voltage and
resistance combinations the surge current is not
expected to exceed 70 mA.

FIGURE 2-3. Load/Power Supply Requirements

For digital (HART or AMS) communications, the load must be at least 250 ohms. To supply the 12.5 Vdc lift off voltage at
the transmitter, the power supply voltage must be at least 18 Vdc.
For intrinsically safe operation the supply voltage should not exceed 30.0 Vdc.
2.4.2 Power Supply-Current Loop wiring. Refer to Figure 2-4.
Run the power/signal wiring through the
opening nearest terminals 15 and 16. use
shielded cable and ground the shield at the
power supply. To ground the transmitter,
attach the shield to the grounding screw on
the inside of the transmitter case. A third
wire can also be used to connect the transmitter case to earth ground.
NOTE
For optimum EMI/RFI immunity, the
power supply/output cable should be
shielded and enclosed in an earthgrounded metal conduit.
do not run power supply/signal wiring in
the same conduit or cable tray with AC
power lines or with relay actuated signal
cables. Keep power supply/ signal wiring at
least 6 ft (2 m) away from heavy electrical
equipment.
An additional 0-1 mA current loop is available between TB-14 and TB-15. A 1 mA current in this loop signifies a sensor fault. See
Section 3.0 for wiring instructions. See
Section 8.4 or 10.6 and Section 12.0 for
more information about sensor faults.

FIGURE 2-4. Model 5081-T-HT Power wiring Details

MODEL 5081-T

2.5

SECTION 2.0
INSTALLATION

POwER SUPPLy wIRING FOR
MODEL 5081-T-FF/FI

2.5.1 Power Supply wiring. Refer to Figure 2-5 and
Figure 2-6.
Run the power/signal wiring through the opening nearest
terminals 15 and 16. use shielded cable and ground the
shield at the power supply. To ground the transmitter,
attach the shield to the grounding screw on the inside of
the transmitter case. A third wire can also be used to connect the transmitter case to earth ground.
NOTE
For optimum EMI/RFI immunity, the power supply/output cable should be shielded and
enclosed in an earth-grounded metal conduit.
do not run power supply/signal wiring in the same conduit or cable tray with AC power lines or with relay actuated signal cables. Keep power supply/signal wiring at
least 6 ft (2 m) away from heavy electrical equipment.

5081-T
Transmitter

FIGURE 2-5. Typical Fieldbus Network Electrical
wiring Configuration

9 - 32

FIGURE 2-6. Model 5081-T-FF Power wiring Details

MODEL 5081-T

SECTION 3.0
wIRING

SECTION 3.0
wIRING
3.1
3.2

Sensor wiring
Electrical Installation

3.1 SENSOR wIRING
Wire sensor as shown below in Figure 3-1. Keep sensor wiring separate from power wiring. For best EMI/RFI protection,
use shielded output signal cable in an earth-grounded metal conduit. Refer to the sensor instruction manual for more
details.

FIGURE 3-1. wiring Model 5081T-HT
3.1.1 wIRING THROUGH A jUNCTION BOx
The sensor can be wired to the analyzer through a remote junction box (PN 23550-00). Wire the extension cable and sensor cable point-to-point. Refer to the sensor instruction manual for more details.
Factory-terminated (PN 23294-05) and unterminated (PN 9200276) connecting cable are available. The use of factory-terminated cable is strongly recommended. To prepare unterminated cable for use, follow the instructions in the sensor instruction
manual.
For maximum EMI/RFI protection, the outer braid of the sensor cable should be connected to the outer braided shield of
the extension cable. At the instrument, connect the outer braid of the extension cable to earth ground.
14

MODEL 5081-T

SECTION 3.0
wIRING

3.1.2 POwER wIRING MODEL 5081-T-HT
For general purpose areas, wire power as shown
in Figure 3-2. For hazardous areas, please see
hazardous area installation drawings.

FIGURE 3-2. Power Supply/Current Loop wiring for Model 5081-T-HT

3.1.3 POwER wIRING MODEL 5081-T-FF
For general purpose areas, wire power as shown
in Figure 3-3. For hazardous areas, please see
hazardous area installation drawings.

9 - 32

FIGURE 3-3. Power Supply/Current Loop wiring for Model 5081-T-FF

FIGURE 3-4. Power Supply and Sensor wiring for Model 5081-T

MODEL 5081-T

SECTION 3.0
wIRING

3.2 ELECTRICAL INSTALLATION
All Rosemount Analytical contacting conductivity sensors with PT100 RTd or PT1000 RTd are compatible with the Model
5081-T transmitter. Please refer to Figures 3-5 thru 3-7 for appropriate sensor to transmitter wiring. The sensor cable
should be routed through the left inlet closest to the connector.
NOTE
optimum EMI/RFI immunity may be achieved on sensors whose interconnecting cable has an outer braided shield by
utilizing a cable gland fitting that provides for continuity between the braided shield and the transmitter enclosure. An
equivalent conduit connector may also be used if the sensor cable is to be enclosed in conduit.

FIGURE 3-5. wiring Model 242 sensor to Model 5081-T transmitter

MODEL 5081-T

SECTION 3.0
wIRING

FIGURE 3-6. wiring Models 222, 225, 226, 228, 242, & 247 sensors to Model 5081-T transmitter

MODEL 5081-T

SECTION 3.0
wIRING

FIGURE 3-7. wiring Models 222, 225, 226, & 228 sensors to Model 5081-T transmitter

MODEL 5081-T

SECTION 4.0
INTRINSICALLy SAFE & ExPLOSION PROOF

FIGURE 4-1. Model 5081-T-HT Infrared Remote Control — CSA, FM, & Baseefa/ATEx approvals

FIGURE 4-2. Model 5081-T-FF/FI Infrared Remote Control — CSA, FM, & Baseefa/ATEx approvals

MODEL 5081-T

SECTION 4.0
INTRINSICALLy SAFE & ExPLOSION PROOF

FIGURE 4-3. FM Explosion-Proof Installation for Model 5081-T-HT

4.1 INTRINSICALLy SAFE AND ExPLOSION-PROOF INSTALLATION FOR MODEL 5081-T-HT

FIGURE 4-4. FM Intrinsically Safe Installation for Model 5081-T-HT

MODEL 5081-T
SECTION 4.0
INTRINSICALLy SAFE & ExPLOSION PROOF

FIGURE 4-5. CSA Intrinsically Safe Installation for Model 5081-T-HT

MODEL 5081-T

SECTION 4.0
INTRINSICALLy SAFE & ExPLOSION PROOF

FIGURE 4-6. ATEx Intrisically Safe Label for Model 5081-T-HT

MODEL 5081-T

USE ONLY APPROVED CONDUIT SEALS AND FITTINGS.

TOROIDAL
SENSOR

RIGID METAL CONDUIT
AND APPROVED SEALS

NOTES: UNLESS OTHERWISE SPECIFIED

1. INSTALLATION MUST CONFORM TO THE NEC.

2. SEAL REQUIRED AT EACH CONDUIT ENTRANCE.

BE RA T E D
70

5081-T-FF-67

°C

DRV 10
COM

F OR

WIRING LABEL

MUST
NG
RI

1
DR 1
V

CLASS I, DIV 1, GPS B-D
CLASS II, DIV 1, GPS E-G
CLASS III, DIV 1
70°C MAX

HAZARDOUS AREA

RELEASE DATE

07-30-02

RIGID METAL CONDUIT
AND APPROVED SEALS

ECO NO.

8568

REV

FINISH

+ 1/2
DIMENSIONS ARE IN INCHES

ANGLES

TOLERANCES

REMOVE BURRS & SHARP EDGES .020 MAX
MACHINED FILLET RADII .020MAX
NOMINAL SURFACE FINISH 125

+ .030
+ .010
-

MATERIAL

.XX
.XXX

UNLESS OTHERWISE SPECIFIED

3
8880

SEE ECO

PART NO.

J. FLOCK

05/ 07 /02

DATE

THIS DWG CONVERTED
TO SOLID EDGE

PROJECT
ENGR APVD

CHECKED

N.K.

APPROVALS
DRAWN

ITEM

POWER SUPPLY
32 VDC MAX

SAFE AREA

ECO

LTR

FIGURE 4-7. FM Explosion-Proof Installation for Model 5081-T-FF

3
RTD
COM

4
RT
SEN D
SE

RT 5
IN D
A
00 /
20 -

41 5

92
PN

2
RTD
SHLD
1 ED
ERV
RES

7 M
CO
RCV

16
HT/F
(+) F

SAFE AREA

6 V
RC LD
SH

222, 225, 226, 228,
242 & 245

9
DRV
SHLD

15
HT/FF
(-)

14
NC

8
RCV

RECOMMENDED SENSORS:

13
NC

12
NC

DESCRIPTION
BILL OF MATERIAL

DATE
9-14-04

REV

Emerson Process Management,
Rosemount Analytical Division
2400 Barranca Pkwy
Irvine, CA 92606

1400218
TYPE

SHEET 1 OF 1
06-01

REV

QTY

REVISIONS NOT PERMITTED
W/O AGENCY APPROVAL

EXP PROOF 5081-T-FF
DWG NO.

CHK

THIS DOCUMENT IS
CERTIFIED BY

SCHEM, SYSTEM FMRC

Emerson

SCALE NONE

SIZE

TITLE

DESCRIPTION

REVISION

D 1400218

16 15

This document contains information proprietary to
Rosemount Analytical, and is not to be made available
to those who may compete with Rosemount Analytical.

MODEL 5081-T
SECTION 4.0
INTRINSICALLy SAFE & ExPLOSION PROOF

4.2 INTRINSICALLy SAFE AND ExPLOSION-PROOF INSTALLATION FOR MODEL 5081-T-FF

NOTES: UNLESS OTHERWISE SPECIFIED

Voc OR Vt NOT GREATER THAN 30 V
Isc OR It NOT GREATER THAN 300 mA
Pmax NOT GREATER THAN 1.3 W

RELEASE DATE

7-30-03

5081-T-FF

ECO NO.

8568

MODEL NO.

IS CLASS I, II, III,
DIVISION 1,
GROUPS A, B, C, D, E, F, G;
NI CLASS I,
DIVISION 2,
GROUPS A,B,C,D;
SUITABLE CLASS II,
DIVISION 2,
GROUPS F & G;
SUITABLE CLASS III,
DIVISION 2

HAZARDOUS AREA

4
8880

TABLE I

REV

300

REMOVE BURRS & SHARP EDGES .020 MAX
MACHINED FILLET RADII .020 MAX
NOMINAL SURFACE FINISH 125

MATERIAL

FINISH

+ 1/2
DIMENSIONS ARE IN INCHES

ANGLES

TOLERANCES

UNLESS OTHERWISE SPECIFIED

Imax (mA)

+ .030
+ .010
-

1
BJ

UNSPECIFIED
POWER SUPPLY
30 VDC MAX

SUBSTITUTION OF COMPONENTS MAY IMPAIR INTRINSIC SAFETY OR
SUITABILITY FOR DIVISION 2.

.XX

REVISION
DESCRIPTION

PART NO.

04 /10 /03

PROJECT
ENGR APVD

THIS DWG CONVERTED
TO SOLID EDGE

J. FLOCK

04 /10 /03

04 /17 /02

DATE

Uniloc

BILL OF MATERIAL

DESCRIPTION

Li (mH)

REV

Rosemount Analytical,
Uniloc Division
2400 Barranca Pkwy
Irvine, CA 92606

REVISIONS NOT PERMITTED
W/O AGENCY APPROVAL

DWG NO.

TYPE

1400208
1

SHEET 1 OF

SCHEMATIC, INSTALLATION
5081-T-FF XMTR
FM APPROVALS

SCALE NONE

SIZE

TITLE

27.8

Ci (nF)

CHECKED J. FLOCK

N. KOUMBIS

APPROVALS
DRAWN

ITEM

1.3

Pmax (W)

DATE
9-14-04

THIS DOCUMENT IS
CERTIFIED BY

TO PREVENT IGNITION OF FLAMMABLE OR COMBUSTIBLE ATMOSPHERES,
DISCONNECT POWER BEFORE SERVICING.

Vmax (Vdc)

.XXX

UNCLASSIFIED AREA

SEE ECO

SAFETY BARRIER
(SEE NOTES 1 & 6)

ECO

LTR

5081-T-FF ENTITY PARAMETERS
SUPPLY / SIGNAL TERMINALS TB 1-15, 16

WARNING-

FIGURE 4-8. FM Intrinsically Safe Installation for Model 5081-T-FF

1. ANY SINGLE SHUNT ZENER DIODE SAFETY BARRIER APPROVED BY FM HAVING THE FOLLOWING OUTPUT PARAMETERS:
SUPPLY/SIGNAL TERMINALS TB1-15, 16

2. INTRINSICALLY SAFE APPARATUS (MODEL 5081-T-FF, FIELDBUS TERMINATOR AND ANY ADDITIONAL
FIELDBUS DEVICES) AND ASSOCIATED APPARATUS (SAFETY BARRIER) SHALL MEET THE FOLLOWING
REQUIREMENTS: THE VOLTAGE (Vmax) AND CURRENT (Imax) OF THE INTRINSICALLY SAFE APPARATUS
MUST BE EQUAL TO OR GREATER THAN THE VOLTAGE (Voc OR Vt) AND CURRENT (Isc OR It) WHICH
CAN BE DELIVERED BY THE ASSOCIATED APPARATUS (SAFETY BARRIER). IN ADDITION, THE MAXIMUM
UNPROTECTED CAPACITANCE (Ci) AND INDUCTANCE (Li) OF THE INTRINSICALLY SAFE APPARATUS,
INCLUDING INTERCONNECTING WIRING, MUST BE EQUAL OR LESS THAN THE CAPACITANCE (Ca) AND
INDUCTANCE (La) WHICH CAN BE SAFELY CONNECTED TO THE APPARATUS. (REF. TABLE I).

3. INSTALLATION SHOULD BE IN ACCORDANCE WITH ANSI/ISA RP12.06.01 "INSTALLATION OF
INTRINSICALLY SAFE SYSTEMS FOR HAZARDOUS (CLASSIFIED) LOCATIONS" AND THE NATIONAL
ELECTRICAL CODE (ANSI/NFPA 70).

4. DUST-TIGHT CONDUIT SEAL MUST BE USED WHEN INSTALLED IN CLASS II AND CLASS III ENVIRONMENTS.

5. RESISTANCE BETWEEN INTRINSICALLY SAFE GROUND AND EARTH GROUND MUST BE LESS THAN 1.0 Ohm.

6. THE ENTITY CONCEPT ALLOWS INTERCONNECTION OF INTRINSICALLY SAFE APPARATUS
WITH ASSOCIATED APPARATUS WHEN THE FOLLOWING IS TRUE:
FIELD DEVICE INPUT
ASSOCIATED APPARATUS OUTPUT
Vmax OR Ui
Voc, Vt OR Uo;
Imax OR Ii
Isc, It OR Io;
Pmax OR Pi
Po;
Ci+ Ccable;
Ca, Ct OR Co
Li+ Lcable.
La, Lt OR Lo

7. ASSOCIATED APPARATUS MANUFACTURER'S INSTALLATION DRAWING MUST BE FOLLOWED
WHEN INSTALLING THIS EQUIPMENT.

8. CONTROL EQUIPMENT CONNECTED TO ASSOCIATED APPARATUS MUST NOT USE OR GENERATE
MORE THAN 250 Vrms OR Vdc.

9. THE ASSOCIATED APPARATUS MUST BE FM APPROVED.

10. NO REVISION TO DRAWING WITHOUT PRIOR FM APPROVAL.

11. USE SUPPLY WIRES SUITABLE FOR 5°C ABOVE SURROUNDING AMBIENT.

12 MAXIMUM SENSOR CABLE LENGTH IS 250 FEET.

INFRARED
REMOTE CONTROL UNIT
(RMT PN 23572-00)
FOR USE IN
CLASS I AREA ONLY

CHK

10-96

REV

QTY

D 1400208

APPROVED CONDUCTIVITY
SENSORS
222, 225, 226 & 228
242 & 245

MODEL
5081-T-FF
XMTR

4
2

13
14
16 15

This document contains information proprietary to
Rosemount Analytical, and is not to be made available
to those who may compete with Rosemount Analytical.

MODEL 5081-T
SECTION 4.0
INTRINSICALLy SAFE & ExPLOSION PROOF

FIGURE 4-9. CSA Intrinsically Safe Installation for Model 5081-T-FF

MODEL 5081-T

SECTION 4.0
INTRINSICALLy SAFE & ExPLOSION PROOF

2X FULL R
1.30 ±.02

NOTES: UNLESS OTHERWISE SPECIFIED

4X R .25

.140 ±.005

FINISH

SE E E C O

REVISION

THIS FILE CREATED USING
SOLID EDGE

J. FLOCK

5-21-02

5-21-02
J. FLOCK
CHECKED
ENG APVD

5-14-02
B. JOHNSON

DATE

DESCRIPTION

DRAWN

APPROVALS

ECO
LQ D 1 0 2 4 5

FIGURE 4-10 ATEx Intrisically Safe Label for Model 5081-T-FF

LTR
F

2.180 ±.005

REV
E

DIMENSIONS ARE IN INCHES
REMOVE BURRS & SHARP EDGES
MACHINE FILLET RADII .020 MAX
NOMINAL SURFACE FINISH: 125
ANGLES ± 1/2°.
.XX ± .03 .XXX ± .010

MATERIAL

.650 ±.015

O .125

ECO NO
8554

DIRECTION OF NATURAL GRAIN

.125

1 MATERIAL: AISI 300 SERIES STAI
NLESS STEEL .015 ± .005 THICK. MATERIAL
TO BE ANNEALED & PASS
IVATED. MAXIMUM HARDNESS BRINELL 190.

2. NO CHANGE WITHOUT BASEEFA APPROVAL.

3. ARTWORK IS SUPPLIED BY ROSEMOUNT ANALYTICAL.

4 FINISH: SILKSCREEN BLACK EPOXY PAINT (BAKED).

2.56 ±.02

RELEASE DATE
6-25-03

ANALYTICAL

ROSEMOUNT

REVISIONS NOT PERMITTED
W/O AGENCY APPROVAL

REV

SCALE: 2:1

WEIGHT:

SHEET 1 OF 1

LABEL, I.S. BAS/ATEX
5081-T-FF
SIZE DWG NO
REV
F
B 9241514-00

TITLE

PROCESS MANAGEMENT

Emerson

Baseefa Certified Product
No modifications permitted
without the approval of
the Authorized Person
Related Drawing

Baseefa

THIS DOCUMENT IS
CERTIFIED BY

DATE CHECKED/APPROVED
BY
JP/DOC
C H 3-21-11

.120 ±.005

This document contains information proprietary to
Rosemount Analytical, and is not to be made available
to those who may compete with Rosemount Analytical.

MODEL 5081-T
SECTION 4.0
INTRINSICALLy SAFE & ExPLOSION PROOF

9241514-00

USE ONLY APPROVED CONDUIT SEALS AND FITTINGS.

TOROIDAL
SENSOR

RIGID METAL CONDUIT
AND APPROVED SEALS

NOTES: UNLESS OTHERWISE SPECIFIED

1. INSTALLATION MUST CONFORM TO THE NEC.

2. SEAL REQUIRED AT EACH CONDUIT ENTRANCE.

MUST

BE RA T E D
70

5081-T-FI-67

°C

DRV 10
COM
F OR

WIRING LABEL

G
IN

11
DR
V

CLASS I, DIV 1, GPS B-D
CLASS II, DIV 1, GPS E-G
CLASS III, DIV 1
70°C MAX

HAZARDOUS AREA

RELEASE DATE

5-6-04

RIGID METAL CONDUIT
AND APPROVED SEALS

ECO NO.

8933

A
REV

FINISH

+ 1/2
DIMENSIONS ARE IN INCHES

ANGLES

TOLERANCES

REMOVE BURRS & SHARP EDGES .020 MAX
MACHINED FILLET RADII .020 MAX
NOMINAL SURFACE FINISH 125

+
- .030
+ .010
-

MATERIAL

.XX
.XXX

UNLESS OTHERWISE SPECIFIED

3
ECO

PART NO.

J. FLOCK

PROJECT
ENGR APVD

THIS DWG CREATED IN
SOLID EDGE

J. FLOCK
CHECKED

B. JOHNSON

APPROVALS
DRAWN

ITEM

POWER SUPPLY
17.5 VDC MAX

DATE

5/6/04

5/3/04

SAFE AREA

LTR

FIGURE 4-11. FM Explosion-Proof Installation for Model 5081-T-FI

9
DRV
SHLD

16
HT/F
(+) F

SAFE AREA

2
RTD
SHLD

3
RTD
COM

4
RT
SEN D
SE

RT 5
IN D
00 / A
20-

41 5

92
PN

D
1 E
ERV
RES

6 V
R C LD
SH

8
RCV

15
HT/FF
(-)

14
NC

7 M
CO
RCV

RECOMMENDED SENSORS:
222
225
226
228
242

13
NC

12
NC

REVISION

DESCRIPTION
BILL OF MATERIAL

1
DATE

REV

Emerson Process Management,
Rosemount Analytical Division
2400 Barranca Pkwy
Irvine, CA 92606

1400298
TYPE

SHEET 1 OF 1
06-01

REV

QTY

REVISIONS NOT PERMITTED
W/O AGENCY APPROVAL

EXP PROOF 5081-T-FI
DWG NO.

CHK

THIS DOCUMENT IS
CERTIFIED BY

SCHEM, SYSTEM FMRC

Emerson

SCALE NONE

SIZE

TITLE

DESCRIPTION

D 1400298

16 15

This document contains information proprietary to
Rosemount Analytical, and is not to be made available
to those who may compete with Rosemount Analytical.

MODEL 5081-T
SECTION 4.0
INTRINSICALLy SAFE & ExPLOSION PROOF

4.3 INTRINSICALLy SAFE AND ExPLOSION-PROOF INSTALLATION FOR MODEL 5081-T-FI

APPROVED

NO CHANGE WITHOUT FM APPROVAL.

MATERIAL: AISI 300 SERIES STAINLESS
STEEL .015+/-.005 THICK. MATERIAL TO
BE ANNEALED & PASSIVATED. MAXIMUM
HARDNESS BRINELL 190.

NOTES: UNLESS OTHERWISE SPECIFIED

ARTWORK IS SHEET 2 OF 2.

1.30 ±.02
4

.XXX

.XX

FINISH

ANGLES

TOLERANCES
+ 1/2
-

DIMENSIONS ARE IN INCHES
REMOVE BURRS & SHARP EDGES .020 MAX
MACHINED FILLET RADII .020 MAX
NOMINAL SURFACE FINISH 125

+ .030
+- .010

REV
LTR
ECO

PART NO

THIS DWG CREATED IN
SOLID EDGE

PROJECT
ENGR APVD J. FLOCK

J. FLOCK

B. JOHNSON

APPROVALS

CHECKED

DRAWN

ITEM

5/6/04

5/3/04

DATE

SCALE 2:1

SIZE

BY
DATE

REV

9241515-01
SHEET 1 OF

CHK

REV

QTY

Rosemount Analytical,
Uniloc Division
2400 Barranca Pkwy
Irvine, CA 92606

REVISIONS NOT PERMITTED
W/O AGENCY APPROVAL

THIS DOCUMENT IS
CERTIFIED BY

LABEL, I.S. FM
5081-T-FI

DESCRIPTION

DWG NO

Uniloc
TITLE

REVISIONS
DESCRIPTION

BILL OF MATERIAL

FINISH:SILKSCREEN BLACK EPOXY PAINT (BAKED).

UNLESS OTHERWISE SPECIFIED

2.180 ±.005

2.56 ±.02

8933

5-6-04

FIGURE 4-12. FM Intrisically Safe Label for Model 5081-T-FI

.650 ±.015

9241515-01/A

.140 ±.005

.125

EXPLOSION PROOF
CLASS I, DIV.1, GRPS. B,C & D
CLASS II, DIV. 1, GRPS. E,F & G
CLASS III, DIV. 1
PER DWG. 1400298

INTRINSICALLY SAFE FOR
CLASS I, II & III, DIV. 1,
GRPS. A,B,C,D,E,F & G
HAZARDOUS AREA WHEN
CONNECTED PER DWG. 1400284
Tamb= 70°C
T4
NON-INCENDIVE
CLASS I, DIV. 2, GRPS. A,B,C & D
DUST IGNITION PROOF
CLASS II AND III, DIV. 1,
GRPS. E, F & G
WARNING: COMPONENT SUBSTITUTION
MAY IMPAIR INTRINSIC SAFETY
OR SUITABILITY FOR DIV.2.
NEMA 4X ENCLOSURE.

.120 ±.015

ECO NO

RELEASE DATE

B 9241515-01

MATERIAL

Ø .125

ROSEMOUNT ANALYTICAL
MODEL
FM
5081-T-FI-67

2X FULL R

4X R .25

This document contains information proprietary to
Rosemount Analytical, and is not to be made available
to those who may compete with Rosemount Analytical.

MODEL 5081-T
SECTION 4.0
INTRINSICALLy SAFE & ExPLOSION PROOF

(La/Ra OR Lo/Ro)

NOTES: UNLESS OTHERWISE SPECIFIED

RELEASE DATE

ECO NO.

8933

REV

17.5

IIC/
A,B,C,D,E,F,G
5081-T-FI

5-6-04

17.5

IIB/
C,D,E,F,G

.XX

360

380

Imax (mA)

FINISH

+ 1/2
DIMENSIONS ARE IN INCHES

ANGLES

TOLERANCES

REVISION
DESCRIPTION

ANY FM APPROVED
ASSOCIATED
APPARATUS

1
BY

DATE

J. FLOCK
THIS DWG CREATED IN
SOLID EDGE

PROJECT
ENGR APVD

CHECKED J. FLOCK

B. JOHNSON

5/6/04

5/3/04

DATE

Ci (nF)

PART NO.

APPROVALS
DRAWN

ITEM

2.52

5.32

Pmax (W)

DESCRIPTION

Uniloc

BILL OF MATERIAL

Rosemount Analytical,
Uniloc Division
2400 Barranca Pkwy
Irvine, CA 92606

DWG NO.

TYPE

1400284
1

SHEET 1 OF

SCHEMATIC, INSTALLATION
5081-T-FI XMTR
FM APPROVALS

SCALE NONE

SIZE

TITLE

Li (uH)

REV

REVISIONS NOT PERMITTED
W/O AGENCY APPROVAL

THIS DOCUMENT IS
CERTIFIED BY

TO PREVENT IGNITION OF FLAMMABLE OR COMBUSTIBLE ATMOSPHERES,
DISCONNECT POWER BEFORE SERVICING.

REMOVE BURRS & SHARP EDGES .020 MAX
MACHINED FILLET RADII .020 MAX
NOMINAL SURFACE FINISH 125

+ .030
+ .010
-

MATERIAL

.XXX

SUBSTITUTION OF COMPONENTS MAY IMPAIR INTRINSIC SAFETY OR
SUITABILITY FOR DIVISION 2.

ANY FM APPROVED
TERMINATOR

UNLESS OTHERWISE SPECIFIED

Vmax (Vdc)
GROUPS
5081-T-FI

ECO

NON-HAZARDOUS LOCATIONS

LTR

5081-T-FI FISCO PARAMETERS
SUPPLY / SIGNAL TERMINALS TB 1-15, 16

TABLE I

WARNING-

ANY FM APPROVED
TERMINATOR

MODEL NO.

ANY FM APPROVED
INTRINSICALLY SAFE
APPARATUS

IS CLASS I, II, III,
DIVISION 1,
GROUPS A, B, C, D, E, F, G;
NI CLASS I,
DIVISION 2,
GROUPS A,B,C,D;
SUITABLE CLASS II,
DIVISION 2,
GROUPS F & G;
SUITABLE CLASS III,
DIVISION 2

HAZARDOUS (CLASSIFIED) LOCATIONS

FIGURE 4-13. FM Intrinsically Safe Installation for Model 5081-T-FI

1. INSTALLATION SHOULD BE IN ACCORDANCE WITH ANSI/ISA RP12.06 "INSTALLATION OF INTRINSICALLY SAFE SYSTEMS
FOR HAZARDOUS (CLASSIFIED) LOCATIONS" (EXCEPT CHAPTER 5 FOR FISCO INSTALLATIONS) AND THE NATIONAL ELECTRICAL
CODE (ANSI/NFPA 70) SECTIONS 504 AND 505.

2. DUST-TIGHT CONDUIT SEAL MUST BE USED WHEN INSTALLED IN CLASS II AND CLASS III ENVIRONMENTS.

3. RESISTANCE BETWEEN INTRINSICALLY SAFE GROUND AND EARTH GROUND MUST BE LESS THAN 1.0 Ohm.

4. THE ENTITY CONCEPT ALLOWS INTERCONNECTION OF INTRINSICALLY SAFE APPARATUS
WITH ASSOCIATED APPARATUS WHEN THE FOLLOWING IS TRUE:
FIELD DEVICE INPUT
ASSOCIATED APPARATUS OUTPUT
Vmax OR Ui
Voc, Vt OR Uo;
Imax OR Ii
Isc, It OR Io;
Pmax OR Pi
Po;
3Ci+ 3Ccable;
Ca, Ct OR Co
La, Lt OR Lo; OR Lc/Rc
(La/Ra OR Lo/Ro) AND Li/Ri
3Li + 3Lcable.

5. ASSOCIATED APPARATUS MANUFACTURER'S INSTALLATION DRAWING MUST BE FOLLOWED
WHEN INSTALLING THIS EQUIPMENT.

6. CONTROL EQUIPMENT CONNECTED TO ASSOCIATED APPARATUS MUST NOT USE OR GENERATE
MORE THAN 250 Vrms OR Vdc.

7. THE CONFIGURATION OF ASSOCIATED APPARATUS MUST BE FACTORY MUTUAL RESEARCH APPROVED
UNDER THE ASSOCIATED CONCEPT.

8. NO REVISION TO DRAWING WITHOUT PRIOR FACTORY MUTUAL RESEARCH APPROVAL.

9. USE SUPPLY WIRES SUITABLE FOR 5°C ABOVE SURROUNDING AMBIENT.

10 MAXIMUM SENSOR CABLE LENGTH IS 250 FEET.

10-96

REV

QTY

CHK

D 1400284

INFRARED
REMOTE CONTROL UNIT
(RMT PN 23572-00)
FOR USE IN
CLASS I AREA ONLY

APPROVED CONDUCTIVITY
SENSORS
222,225,226 & 228
242 (1" & 2" ONLY)

MODEL
5081-T-FI
XMTR
6

FISCO
FM INTRINSIC SAFETY INSTALLATION
9

3
2

12
13
14
16 15

This document contains information proprietary to
Rosemount Analytical, and is not to be made available
to those who may compete with Rosemount Analytical.

MODEL 5081-T
SECTION 4.0
INTRINSICALLy SAFE & ExPLOSION PROOF

SA
R

LR34186
ENCLOSURE 4

MATERIAL: AISI 300 SERIES STAINLESS
STEEL .015+/-.005 THICK. MATERIAL TO
BE ANNEALED & PASSIVATED. MAXIMUM
HARDNESS BRINELL 190.

NOTES: UNLESS OTHERWISE SPECIFIED

NO CHANGE WITHOUT CSA APPROVAL.

1.30

.125

9241516-01/A

±.02

.650

±.015

FINISH

ANGLES

TOLERANCES
+ 1/2
-

DIMENSIONS ARE IN INCHES
REMOVE BURRS & SHARP EDGES .020 MAX
MACHINED FILLET RADII .020 MAX
NOMINAL SURFACE FINISH 125

+ .030
+- .010

MATERIAL

.XXX

.XX

REV
A

ECO NO
8925

LTR
ECO

PART NO

J. FLOCK

THIS DWG CREATED IN
SOLID EDGE

PROJECT
ENGR APVD

J. FLOCK

B. JOHNSON

APPROVALS

CHECKED

DRAWN

ITEM

DATE

5/6/04

5/3/04

SCALE 2:1

SIZE

DATE

REV

9241516-01

CHK

SHEET 1 OF 2

REV

QTY

Rosemount Analytical,
Uniloc Division
2400 Barranca Pkwy
Irvine, CA 92606

REVISIONS NOT PERMITTED
W/O AGENCY APPROVAL

CSA

THIS DOCUMENT IS
CERTIFIED BY

LABEL, I.S. CSA
5081-T-FI

DESCRIPTION

DWG NO

Uniloc
TITLE

REVISIONS
DESCRIPTION

BILL OF MATERIAL

FINISH:SILKSCREEN BLACK EPOXY PAINT (BAKED).

2.56 ±.02

UNLESS OTHERWISE SPECIFIED

2.180 ±.005

.120

RELEASE DATE
5-6-04

FIGURE 4-14. CSA Intrisically Safe Label for Model 5081-T-FI

±.015

CLASS I, DIV. 2, GRPS A,B,C & D
SUITABLE FOR
CLASS II, DIV. 2, GRPS E, F & G
Tamb= 70°C
T3A
WARNING-EXPLOSION HAZARD-DO NOT
DISCONNECT WHILE CIRCUIT IS LIVE
UNLESS AREA IS KNOWN TO BE NONHAZARDOUS.
WARNING-EXPLOSION HAZARD-SUBSTITUTION OF COMPONENTS MAY IMPAIR
SUITABILITY FOR CLASS I, DIV 2.
CLASS I, GRPS B,C & D
CLASS II, GRPS E, F & G
CLASS III
Tamb = 65°C MAX
Tamb ABOVE 60°C USE 75°C MINIMUM
RATED WIRING
SEAL REQUIRED TO BE INSTALLED
WITHIN 50 mm OF THE ENCLOSURE.
KEEP COVER TIGHT WHILE CIRCUITS
ARE LIVE.

Exia ENTITY
INTRINSICALLY SAFE FOR
CLASS I, GRPS A, B, C & D
CLASS II, GRPS E, F & G
CLASS III
T3A Tamb = 70°C
HAZARDOUS AREA WHEN CONNECTED
PER DWG. 1400285
WARNING: COMPONENT SUBSTITUTION
MAY IMPAIR INTRINSIC SAFETY.

ARTWORK IS SHEET 2 OF 2.

.140

Ø .125

ROSEMOUNT ANALYTICAL
MODEL
5081-T-FI-69

2X FULL R

4X R .25

This document contains information proprietary to
Rosemount Analytical, and is not to be made available
to those who may compete with Rosemount Analytical.

MODEL 5081-T
SECTION 4.0
INTRINSICALLy SAFE & ExPLOSION PROOF

B 9241516-01

5
4

NOTES: UNLESS OTHERWISE SPECIFIED

RELEASE DATE

5-6-04

ECO NO.

REV

.XX

FINISH

2
REVISION
DESCRIPTION

380

Imax (mA)

+ 1/2
DIMENSIONS ARE IN INCHES

ANGLES

TOLERANCES

REMOVE BURRS & SHARP EDGES .020 MAX
MACHINED FILLET RADII .020 MAX
NOMINAL SURFACE FINISH 125

+ .030
+ .010
-

PART NO.

J. FLOCK
THIS DWG CREATED IN
SOLID EDGE

PROJECT
ENGR APVD

CHECKED J. FLOCK

B. JOHNSON

APPROVALS
DRAWN

ITEM

5. 3 2

Pmax (W)

5/6/04

5/3/04

DATE

BILL OF MATERIAL

DESCRIPTION

Li (mH)

REV A
REV

REV

Rosemount Analytical,
Uniloc Division
2400 Barranca Pkwy
Irvine, CA 92606

REVISIONS NOT PERMITTED
W/O AGENCY APPROVAL

CSA

DWG NO.

TYPE

1400285
1

SHEET 1 OF

SCHEMATIC, INSTALLATION
5081-T-FI XMTR CSA

Uniloc

SCALE NONE

SIZE

TITLE

27.8

Ci (nF)

DATE

THIS DOCUMENT IS
CERTIFIED BY

TO PREVENT IGNITION OF FLAMMABLE OR COMBUSTIBLE ATMOSPHERES,
DISCONNECT POWER BEFORE SERVICING.

TABLE I

1
BY

UNSPECIFIED
POWER SUPPLY
17.5 VDC MAX

UNCLASSIFIED AREA

5081-T-FI ENTITY PARAMETERS
SUPPLY / SIGNAL TERMINALS TB 1-15, 16

MATERIAL

.XXX

ECO

CSA APPROVED
ASSOICATED APPARATUS
SUITABLE FOR FISCO
SEE NOTE 5 AND TABLE 1

LTR

SUBSTITUTION OF COMPONENTS MAY IMPAIR INTRINSIC SAFETY OR
SUITABILITY FOR DIVISION 2.

UNLESS OTHERWISE SPECIFIED

Vmax (Vdc)
17.5

WARNING-

8925

5081-T-FI

MODEL NO.

NI CLASS I, DIV 2
GRPS A-D
CLASS II, DIV 2
GRPS E-G

IS CLASS I, GRPS A-D
CLASS II, GRPS E-G
CLASS III

HAZARDOUS AREA

FIGURE 4-15. CSA Intrinsically Safe Installation for Model 5081-T-FI

1. INTRINSICALLY SAFE APPARATUS (MODEL 5081-T-FI, IRC TRANSMITTER)
AND ASSOCIATED APPARATUS (SAFETY BARRIER) SHALL MEET THE FOLLOWING REQUIREMENTS:
THE VOLTAGE (Vmax) AND CURRENT (Imax) OF THE INTRINSICALLY SAFE APPARATUS MUST BE
EQUAL TO OR GREATER THAN THE VOLTAGE (Voc OR Vt) AND CURRENT (Isc OR It) WHICH CAN BE
DELIVERED BY THE ASSOCIATED APPARATUS (SAFETY BARRIER). IN ADDITION, THE MAXIMUM
UNPROTECTED CAPACITANCE (Ci) AND INDUCTANCE (Li) OF THE INTRINSICALLY SAFE APPARATUS,
INCLUDING INTERCONNECTING WIRING, MUST BE EQUAL OR LESS THAN THE CAPACITANCE (Ca) AND
INDUCTANCE (La) WHICH CAN BE SAFELY CONNECTED TO THE APPARATUS. (REF. TABLE I).

2. INSTALLATION SHOULD BE IN ACCORDANCE WITH ANSI/ISA RP12.06.01 "INSTALLATION OF
INTRINSICALLY SAFE SYSTEMS FOR HAZARDOUS (CLASSIFIED) LOCATIONS" AND THE CANADIAN
ELECTRICAL CODE (CSA C22.1).

3. DUST-TIGHT CONDUIT SEAL MUST BE USED WHEN INSTALLED IN CLASS II AND CLASS III ENVIRONMENTS.

4. RESISTANCE BETWEEN INTRINSICALLY SAFE GROUND AND EARTH GROUND MUST BE LESS THAN 1.0 Ohm.

5. THE ENTITY CONCEPT ALLOWS INTERCONNECTION OF INTRINSICALLY SAFE APPARATUS
WITH ASSOCIATED APPARATUS WHEN THE FOLLOWING IS TRUE:
FIELD DEVICE INPUT
ASSOCIATED APPARATUS OUTPUT
Vmax OR Ui
Voc, Vt OR Uo;
Imax OR Ii
Isc, It OR Io;
Pmax OR Pi
Po;
Ci+ Ccable;
Ca, Ct OR Co
Li+ Lcable.
La, Lt OR Lo

6. ASSOCIATED APPARATUS MANUFACTURER'S INSTALLATION DRAWING MUST BE FOLLOWED
WHEN INSTALLING THIS EQUIPMENT.

7. CONTROL EQUIPMENT CONNECTED TO ASSOCIATED APPARATUS MUST NOT USE OR GENERATE
MORE THAN 250 Vrms OR Vdc.

8. THE ASSOCIATED APPARATUS MUST BE CSA APPROVED.

9. NO REVISION TO DRAWING WITHOUT PRIOR CSA APPROVAL.

10. USE SUPPLY WIRES SUITABLE FOR 5 °C ABOVE SURROUNDING AMBIENT.

11 MAXIMUM SENSOR CABLE LENGTH IS 250 FEET.

INFRARED
REMOTE CONTROL UNIT
(RMT PN 23572-00)
FOR USE IN
CLASS I AREA ONLY

APPROVED CONDUCTIVITY
SENSORS
222,225,226 & 228
242 (1" & 2" ONLY)

MODEL
5081-T-FI
XMTR

10-96

REV

QTY

CHK

D 1400285

FISCO
CSA INTRINSIC SAFETY INSTALLATION

3
2

13
14
16 15

This document contains information proprietary to
Rosemount Analytical, and is not to be made available
to those who may compete with Rosemount Analytical.

MODEL 5081-T
SECTION 4.0
INTRINSICALLy SAFE & ExPLOSION PROOF

SECTION 4.0
INTRINSICALLy SAFE & ExPLOSION PROOF

FIGURE 4-16. ATEx Intrisically Safe Label for Model 5081-T-FI

MODEL 5081-T

SECTION 5.0
DISPLAy AND OPERATION

SECTION 5.0
DISPLAy AND OPERATION
5.1
5.2
5.3
5.4
5.5
5.6
5.7
5.8
5.9

Displays
Infrared Remote Controller (IRC) - Key Functions
Quick Start for Model 5081-T-HT
Quick Start for Model 5081-T-FF
Menu Trees
Diagnostic Messages
Default Settings
Security
Using Hold

5.1 DISPLAyS
Figure 5-1 shows the process display screen, and Figure 5-2 shows the program display screen.
Conductivity value

10
.00

mS/cm

Temperature in °C or °F

FIGURE 5-1. Process Display Screen
The process display screen appears during normal operation.

Indicates HART or FouNdATIoN fieldbus
digital communications
Appears when a disabling
condition has occurred
(see Section 7.3.2)

Appears when transmitter
is in hold (see Section 6.3)

Conductivity value
F
A
u
L
T
H
o
L
d

units of display

10
.00

CALIBRATE PRoGRAM

mS/cm

Active menu: CALIBRATE,
PRoGRAM, or dIAGNoSE

dIAGNoSE

CALIbrAtE
Available commands for submenu, prompt, or diagnostic

ExIT

ENTER

Sub-menus, prompts, and
diagnostic messages appear
here

FIGURE 5-2. Program Display Screen
The program display screen appears when calibrating, programming, or reading diagnostic messages.

MODEL 5081-T

SECTION 5.0
DISPLAy AND OPERATION

5.2 INFRARED REMOTE CONTROLLER (IRC) - KEy FUNCTIONS
The infrared remote controller is used to calibrate and program the transmitter and to read diagnostic messages.
See Figure 5-3 for a description of the function of the keys.

RESET - Press to end the current operation and return to the process display.
Changes will NoT be saved. RESET
does not return the transmitter to factory
default settings.
Editing Keys - use the editing keys to
change the value of a flashing display.
The left and right arrow keys move the
cursor one digit at a time across a number. The up and down arrow keys
increase or decrease the value of the
selected digit. The up and down arrow
keys also scroll the display through the
items in a list.
CAL - Press to access the calibrate
menu.*
PROG - Press to access the program
menu.*

HOLD - Press to access the prompt
that turns on or off the Hold function.
HoLd puts the transmitter in hold mode
and sets the output to a pre-programmed value. Press RESET to exit
hold mode.
ENTER - Press to advance from a submenu to the first prompt under the submenu. Pressing ENTER also stores the
selected item or value in memory and
advances to the next prompt.
NExT - Press to advance to the next
sub-menu.
ExIT - Press to end the current operation. The transmitter returns to the first
prompt in the present sub-menu.
Changes will NoT be saved.

DIAG - Press to view diagnostic messages.*
* Pressing CAL, PROG, or DIAG causes
the program screen to appear with the
selected menu (CALIBRATE, PROGRAM,
OR DIAGNOSE) showing. See Figure 5-2.
The first sub-menu (or the first diagnostic
message) also appears. Figure 5-4 shows
the complete menu tree.
FIGURE 5-3. Infrared Remote Controller.

Hold the IRC within 6 feet of the transmitter, and not more than 15 degrees from horizontal to the display window.

MODEL 5081-T

SECTION 5.0
DISPLAy AND OPERATION

5.3 QUICK START FOR MODEL 5081-T-HT (HART)
1. on the Remote, press PRoG, NEXT, NEXT, ENTER.
2. use the arrow buttons to select COnduc (conductivity), nAOH (Sodium Hydroxide 0-15%), HCL (Hydrochloric
Acid 0-16%), H2SO4L (Sulfuric Acid 0-30%), H2SO4H (Sulfuric Acid 96-99.7%), or CuSt (custom curve) mode.
Press ENTER. If you chose CuSt, continue with step 3. If you chose COnduc or one of the preprogrammed %
concentration modes, skip step 3 and go to step 4.
3. If you selected CuST, you will see the Setup Custom screen. To move to the custom curve configuration menu,
press ENTER. You will automatically return to this same Setup Custom screen after configuration is complete.
To continue transmitter display programming, press NEXT in the Setup Custom screen.
4. use the arrow keys to toggle temperature units between Celsius and Farenheit.
5. Press ENTER then RESET.
6. Press PRoG, ENTER.
7. use the arrow buttons to enter the 4 mA value. Press ENTER.
8. use the arrow buttons to enter the 20 mA value. Press ENTER then RESET.
9. Press PRoG, NEXT, ENTER.
10. use the arrow key to toggle t AutO to on or oFF to select using either the process temperature (tAutO = on)
or a manual temperature (tAutO = oFF). Press ENTER. If you selected t AutO = oFF, you will be prompted
to enter the manual temperature; use the arrow keys, then press ENTER.
11. If you selected CondUC in step 2, you will see a COMP (Temperature Compensation type) screen. use the
arrow keys to select desired temperature compensation: LinEAr (linear) or nOnE (raw or uncompensated conductivity). Press ENTER. If you are in LinEAR mode, you can now enter a particular temperature slope (default
is 2%/degC), then press ENTER to apply the slope.
12. Press RESET.
13. Press CAL, NEXT, NEXT, NEXT, ENTER.
14. use the arrow buttons to enter the cell constant of the sensor. Press ENTER, then EXIT.
15. To “zero” the sensor in air, press CAL, NEXT, ENTER.
16. Hold the sensor in air to zero. Press ENTER, then EXIT.
17. If you are measuring % concentration (nAOH, HCL, H2SO4L, or H2SO4H) or custom curve (CuSt), quick start
is complete; proceed to step 20.
18. If you are measuring conductivity (CondUC), then standardize the sensor by placing the sensor in a solution
of known conductivity value. Press CAL, ENTER.
19. use the arrow buttons to enter the current conductivity value of the solution. Press ENTER.
20. Press RESET.
To reset transmiter to factory default settings:
1. Press PRoGRAM, NEXT, NEXT, NEXT, NEXT, NEXT. The screen should say "dEFAULt". Press ENTER.
2. use the arrow keys to toggle between nO (retain your configuration and calibration settings) and yES (restore
factory default settings to all variables).
3. Press ENTER, then EXIT.

5.4 QUICK START FOR MODEL 5081-T-FF/FI (FOUNDATION FIELDBUS)
1. on the Remote, press PRoG, NEXT, ENTER.
2. use the arrow buttons to select COnduc (conductivity), nAOH (Sodium Hydroxide 0-15%), HCL (Hydrochloric
36

MODEL 5081-T

SECTION 5.0
DISPLAy AND OPERATION

Acid 0-16%), H2SO4L (Sulfuric Acid 0-30%), H2SO4H (Sulfuric Acid 95-99.99%), or CuSt (custom curve)
mode. Press ENTER. If you chose CuSt, continue with step 3. If you chose COnduc or one of the preprogrammed % concentration modes, skip step 3 and go to step 4.
3. If you selected CuST, you will see the Setup Custom screen. To move to the custom curve configuration menu,
press ENTER. You will automatically return to this same Setup Custom screen after configuration is complete.
To continue transmitter display programming, press NEXT in the Setup Custom screen.
4. use the arrow keys to toggle temperature units between Celsius and Farenheit.
5. Press ENTER then RESET.
6. Press PRoG, ENTER.
7. use the arrow key to toggle t AutO to on or oFF to select using either the process temperature (tAutO = on)
or a manual temperature (tAutO = oFF). Press ENTER. If you selected t AutO = oFF, you will be prompted to
enter the manual temperature; use the arrow keys, then press ENTER.
8. If you selected CondUC in step 2, you will see a COMP (Temperature Compensation type) screen. use the
arrow keys to select desired temperature compensation: LinEAr (linear) or nOnE (raw or uncompensated conductivity). Press ENTER. If you are in LinEAR mode, you can now enter a particular temperature slope (default
is 2%/degC), then press ENTER to apply the slope.
9. Press RESET.
10. Press CAL, NEXT, NEXT, NEXT, ENTER.
11. use the arrow buttons to enter the cell constant of the sensor. Press ENTER, then EXIT.
12. To “zero” the sensor in air, press CAL, NEXT, ENTER.
13. Hold the sensor in air to zero. Press ENTER, then EXIT.
14. If you are measuring % concentration (nAOH, HCL, H2SO4L, or H2SO4H) or custom curve (CuSt), quick start
is complete; proceed to step 20.
15. If you are measuring conductivity (CondUC), then standardize the sensor by placing the sensor in a solution
of known conductivity value. Press CAL, ENTER.
16. use the arrow buttons to enter the current conductivity value of the solution. Press ENTER.
17. Press RESET.
To reset transmiter to factory default settings:
1. Press PRoGRAM, NEXT, NEXT, NEXT. The screen should say "dEFAULt". Press ENTER.
2. use the arrow keys to toggle between nO (retain your configuration and calibration settings) and yES (restore
factory default settings to all variables).
3. Press ENTER, then EXIT.

5.5 MENU TREE - Conductivity
The Model 5081-T transmitter has three menus: CALIBRATE, PRoGRAM, and dIAGNoSE. under the Calibrate
and Program menus are several sub-menus. Figure 5-4 shows the complete menu tree for Model 5081-T-HT.
Figure 5-5 shows the complete menu tree for Model 5081-T-FF.

5.6 DIAGNOSTIC MESSAGES
Whenever a warning or fault limit has been exceeded, the transmitter displays diagnostic messages to aid in troubleshooting. diagnostic messages appear in the same area as the temperature/output readings in the process
display screen (see Figure 5-2). The display alternates between the regular display and the diagnostic message.
Figure 5-4 shows the diagnostic fault messages for conductivity for Model 5081-T-HT. Figure 5-4 shows the diagnostic fault messages for conductivity for Model 5081-T-FF. If more than one warning or fault message has been
generated, the messages appear alternately.
37
See Section 10.0, Troubleshooting, for the meanings of the fault and warning messages.

MODEL 5081-T

SECTION 5.0
DISPLAy AND OPERATION

5.7 DEFAULT SETTINGS
Table 5-1 shows the diagnostic fault messages for conductivity for Model 5081-T-FF. Table 5-2 shows the diagnostic fault
messages for conductivity for Model 5081-T-HT.

FIGURE 5-4. Menu Tree

Model 5081T-HT
Process display Screen

CALIbrAtE
SEnSOr 0
tEMP AdJ

CALIBRATION

5000

CELL COnSt

µS/cm

tEMP SLOPE

25.0C 12.00mA

OUtPUt CAL
CAL key
PROG key
DIAG key
HOLD key
OutPut
tEMP

Process Display

PROGRAM

dISPLAY
HArt
SEtUP CuST
dEFAULT

AbS C
OFFSt
CELL COnSt
tSLOPE1

DIAGNOSTICS

CAL F
5081-T-Ht
SoFt
HArd
FaULTs

PROGRAM MENU MNEMONICS
OUtPUt
4MA
20MA
HoLd
FAULt
dPn
tESt
tEMP
tAUtO
tMAn
dISPLAY
tYP
tEMP
OUtPUt
COdE
OFFSt
38

Current output menu header
4mA current output (setpoint)
20mA current output (setpoint)
Current output on hold
Fault condition current output setting
Current output dampening time
Current output test value
Temperature menu header
Automatic temperature compensation
Manual temperature compensation input
display menu header
Conductivity measurement type
°C / °F toggle selection
Current (mA) or percent of full scale display
Security code
Conductance offset value

MODEL 5081-T

SECTION 5.0
DISPLAy AND OPERATION

FIGURE 5-5. Menu Tree

Model 5081T-FF
Process display Screen

CALIbrAtE
SEnSOr 0

5000

CALIBRATION

µS/cm

25.0C 12.00mA

tEMP AdJ
CELL COnSt

CAL key
PROG key
DIAG key
HOLD key

tEMP SLOPE

tEMP

Process Display

PROGRAM

dISPLAY
SEtUP CuST
dEFAULT

AbS C
OFFSt
CELL COnSt
tSLOPE

DIAGNOSTICS
5081-T-FF
SoFt
HArd
FaULTs

5.8 SECURITy
5.9.1 General. use the programmable security code to protect program and calibration
settings from accidentally being changed. The transmitter is shipped with the security feature disabled.
5.9.2 Entering the Security Code.

PRoGRAM

Id
EXIT

000
ENTER

1. If calibration and program settings are protected with a security code, pressing PRoG
or CAL on the infrared remote controller causes the Id screen to appear.
2.

use the editing keys to enter the security code. Press ENTER .

3. If the security code is correct, the first sub-menu appears. If the security code is incorrect, the process display reappears.
5.9.3 Retrieving a Lost Security Code.
1. If the security code has been forgotten, enter 555 at the Id prompt and press ENTER .
The transmitter will display the present code.
2. Press EXIT to return to the process display.
3. Press PRoG or CAL . The Id screen appears.
4. use the editing keys to enter the security code just shown; then press ENTER .
5. The first sub-menu under the selected menu will appear.
39

MODEL 5081-T

SECTION 5.0
DISPLAy AND OPERATION

TABLE 5-1. Default Settings for Model 5081-T-FF/FI
vARIABLE NAME

MNEMONIC

FACTORy SETTINGS

CUSTOMER SETTINGS

Program Menu
Temperature

temp

Auto temperature compensation

tauto

___________

Manual temperature

tman

25.0°C (overridden by auto)

___________

COMP (Linear or nOnE)

LInEAr

___________

typ (CondUC or nAOH or HCL
or H2SO4L or H2SO4H or Cust)

ConduC

___________

temp

___________

output

Cur

___________

Security Code

code

000

___________

Custom Curve

SEtUP CuSt

Temperature compensation algorithm

Display
Measurement type
Temperature (°C or °F)
output (mA or %)

Reference temperature

display

___________

t ref

25.0°C

___________

rAngE

Auto

___________

Cell constant

CELL Const

3.00

___________

Temperature slope

tEMP slOpe

2.000

___________

Range
Measurement range
Calibrate Menu

Diagnose Menu
Diagnose

SAMPLE READINGS

(Each segment displays the current value in the transmitter.)
Absolute conductivity
off Set
Cell constant
Temperature slope

Abs

1000 µS

___________

OffSt

0.0 µS

___________

CELL COnSt

3.00/cm

___________

2.000

___________

Software version

soft

A02.09

___________

Hardware version

HArd

___________

none

___________

Show fault warnings

tslope

FaULTS

5.9 USING HOLD
during calibration, the sensor may be exposed to solutions having concentration outside the normal range of the process.
To prevent false alarms and undesired operation of chemical dosing pumps, place the transmitter in hold during calibration. Activating hold keeps the transmitter output at the last value or sends the output to a previously determined value.
See Section 7.2, output Ranging, for details.
After calibration, reinstall the sensor in the process stream. Wait until readings have stabilized before deactivating Hold.
To activate or deactivate Hold:
1. Press HoLd on the remote controller.
2. The HoLd prompt appears in the display. Press é or ê to toggle Hold between On and OFF.
3. Press ENTER to save.
40

MODEL 5081-T

SECTION 5.0
DISPLAy AND OPERATION

TABLE 5-2. Default Settings for Model 5081-T-HT
vARIABLE NAME

MNEMONIC

FACTORy SETTINGS

CUSTOMER SETTINGS

Output

–

___________

4 mA

0 µS

___________

20 mA

20 mS

___________

Hold

hold

21 mA

___________

Fault

fault

22 mA

___________

dampening

dpn

0 samples/second

___________

Test

test

04.00 mA

___________

Temperature

temp

Auto temperature compensation

tauto

___________

Manual temperature

tman

25.0°C (overridden by auto)

___________

COMP (Linear or nOnE)

LInEAr

___________

typ (CondUC or nAOH or HCL
or H2SO4L or H2SO4H or Cust)

ConduC

___________

temp

___________

output

Cur

___________

Security Code

code

000

___________

Custom Curve

SEtUP CuSt

Program Menu
Output

Temperature compensation algorithm

Display
Measurement type
Temperature (°C or °F)
output (mA or %)

Reference temperature

display

___________

t ref

25.0°C

___________

rAngE

Auto

___________

Cell constant

CELL Const

3.00

___________

Temperature slope

tEMP slOpe

2.000

___________

output Calibration

OUtPUt CAL

Range
Measurement range
Calibrate Menu

___________

Diagnose Menu
Diagnose

SAMPLE READINGS

(Each segment displays the current value in the transmitter.)
Absolute conductivity
off Set
Cell constant
Temperature slope

Abs

1000 µS

___________

OffSt

0.0 µS

___________

CELL COnSt

3.00/cm

___________

tslope

2.000

___________

Software version

soft

A02.09

___________

Hardware version

HArd

___________

none

___________

Show fault warnings

FaULTS

MODEL 5081-T

SECTION 6.0
START-UP AND CALIBRATION

SECTION 6.0
START-UP AND CALIBRATION
6.1 ACCESSING THE CALIBRATE MENU
The “Calibrate” menu is used to calibrate the transmitter to known temperature and conductivity values. This menu also contains the temperature calibration operation to establish the temperature slope.
Figure 6-1 illustrates the relationship between the Calibrate Menu and its sub-menus. Each sub-menu leads to a series of
prompts that are used for calibration.

Model 5081T-HT
Process display Screen

FIGURE 6-1. Menu Tree
CALIbrAtE
SEnSOr 0
tEMP AdJ

5000

CALIBRATION

µS/cm

25.0C 12.00mA

CELL COnSt
tEMP SLOPE

CAL key
PROG key
DIAG key
HOLD key

OUtPUt CAL

OutPut
tEMP

Process Display

PROGRAM

dISPLAY
HArt
SEtUP CuST
dEFAULT

AbS C
OFFSt
CELL COnSt
tSLOPE1

DIAGNOSTICS

CAL F
5081-T-Ht
SoFt
HArd
FaULTs

MODEL 5081-T

6.2 CALIBRATE MENU
To access the “Calibrate” menu, press the CAL key
on the Infrared Remote Control. If security has
been enabled, the secondary process display will
be replaced with a prompt asking for the “Id”.
using the IRC editing keys, enter the “Id”. If the
correct “Id” is entered, the CALibrAtE sub-menu
will appear when ENTER is pressed.

SECTION 6.0
START-UP AND CALIBRATION

Model 5081-T-HT

Model 5081-T-FF

CALIbrAtE

SEnSor 0

tEMP Adj

If the CALibrAtE sub-menu does not appear when
ENTER is pressed, see Section 5.8.3 (step 8) for
procedure to find correct code.

CELL COnSt

6.2.1 Calibrate

tEMP SLoPE

1. With the sensor in a standard solution of known
conductivity value, allow the temperature of the
sensor to stabilize (10 min).

OutPut CAL

2. To access the CALIbrAtE menu, press the CAL
button on the IRC.
3. Press ENTER to access the CAL segment with flashing prompt.
4. use the IRC editing keys to indicate the conductivity values of the standard solution on the screen.
5. Press ENTER then EXIT to enter the standard solution value and return to the main screen.
6.2.2 Sensor 0
From the main screen, press CAL, then press NEXT to enter the SEnSOr 0 menu. Press ENTER to access the SEnSOr
0 sub-menu. With the sensor attached and in air, press ENTER again to zero the sensor. Press EXIT to return to the
SEnSOr 0 sub-menu.
6.2.3 Temp Adj
1. Press NEXT and then ENTER to access the tEMP sub-menu with flashing prompt. With the sensor in any solution of
known temperature, allow the temperature of the sensor to stabilize (10 min.). use the editing keys of the IRC to change
the displayed value as needed.
2. Press ENTER to standardize the temperature reading and return to the tEMP Adj screen.
6.2.4 Cell Constant
1. When the CALibrAtE sub-menu has been accessed, press NEXT four (4) times and then ENTER to access the CELL
COnSt menu segment with the flashing cell constant prompt.
2. using the arrow keys on the IRC, enter your sensor’s cell constant as indicated on the sensor’s tag or specification
sheet.
3. Press ENTER to save the cell constant into the transmitter memory and return to the CELL COnSt sub-menu.

MODEL 5081-T

SECTION 6.0
START-UP AND CALIBRATION

6.2.5 Temp Slope
1. Press NEXT to enter the tEMP SLOPE menu.
The correct temperature slope must be entered into the transmitter to ensure an acceptable process variable measurement under fluctuating process temperature conditions. Enter the slope in measured conductivity units per degree temperature change using the IRC’s arrow keys. Press ENTER to enter the slope into memory; then press EXIT to return
to the main screen.
2. If the temperature slope of the process is not known but you wish to approximate it, refer to the following guide and press
ENTER to proceed on to tEMP SLOPE sub-menu with flashing prompt. utilize the IRC editing keys to generate the
desired slope value. Press ENTER then EXIT to return to the main screen.
Acids: 1.0 to 1.6% per °C
Bases: 1.8 to 2.2% per °C
Salts:

2.2 to 3.0% per °C

Water: 2.0% per °C
6.2.6 Output Cal
Although the transmitter outputs are calibrated at the factory, they can
be trimmed in the field to match the reading from a standard current
meter. Both the 4 mA and the 20 mA outputs can be trimmed. during
output calibration the transmitter is in Hold. The output current will go
to the value programmed in Section 7.2.
FIGURE 6-2. Current Output Calibration

PROCEDURE
1. Wire an accurate milliammeter as shown in Figure 6-2.
CALIBRATE

2. Press CAL on the remote controller.

OUtpUt CAL
EXIT

3. Press NEXT until the OUtPUt CAL submenu appears. Press ENTER.

ENTER

CALIBRATE

Cur
EXIT

4
. 000
NEXT

ENTER

CALIBRATE

Cur
EXIT

20
. 00
NEXT

ENTER

4. use the arrow keys to change the display to match the reading from the milliammeter. Press ENTER.
5. use the arrow keys to change the display to match the reading from the milliammeter. Press ENTER. Press RESET to return to the main display.

MODEL 5081-T

SECTION 6.0
START-UP AND CALIBRATION

TABLE 6-1. CALIBRATE MENU MNEMONICS

CALIbrAtE
CAL
tEMP SLOPE
Adj SLOPE
tSLOPE
CELL COnSt
SEnSOr
SEnSOr 0
tEMP AdJ
tEMP

Calibrate menu header
Sensor calibration
Sub-menu header
Sub-menu header
Slope adjustment %/°C
Sub-menu header
Sub-menu header
Sensor "0" (performed in air)
Sub-menu header
Temperature adjustment °C/°F

MODEL 5081-T

SECTION 7.0
PROGRAMMING

SECTION 7.0
PROGRAMING
7.1
7.2
7.3
7.4
7.5
7.6
7.7
7.8

General
Output
Temp
Display
HART
Setup Cust
Range
Default

7.1 GENERAL
This section describes how to do the following:
1. assign values to the 4 and 20 mA outputs (for 5081-T-HT only)
2. set the current generated by the transmitter during hold (for 5081-T-HT only)
3. set the current generated by the transmitter when a fault is detected (for 5081-T-HT only)
4. enable and disable automatic temperature correction
5. program the type measurement
6. program HART digital communications
7. set measurement range to automatic (default) or specific conductance ranges
8. reset all settings to factory default condition

Model 5081-T-HT

Model 5081-T-FF

OutPut

tEMP

DiSPLAY

SEtuP CuSt

HART

rAngE

SEtuP CuSt

DEFAuLt

rAngE
DEFAuLt

MODEL 5081-T

SECTION 7.0
PROGRAMMING

7.2 OUTPUT (5081-HT only)
7.2.1 Purpose
This section describes how to do the following:
1. assign values to the 4 and 20 mA outputs
2. set the output current generated during hold
3. set the output current generated when a fault is detected
4. control the amount of dampening on the output signal
5. generate a test current.
7.2.2 Definitions
1. CuRRENT ouTPuTS. The transmitter provides a continuous 4 - 20 mA output directly proportional to the conductivity or resistivity.
2. HoLd. during calibration and maintenance the transmitter output may be outside the normal operating range. Placing
the transmitter on hold prevents false alarms or the unwanted operation of chemical dosing pumps. The transmitter
output can be programmed to remain at the last value or to generate any current between 3.80 and 22.00 mA. during
hold, the transmitter displays the present concentration and temperature. The word HoLd appears in the display.
3. FAuLT. A fault is a system disabling condition. When the transmitter detects a fault, the following happens:
a. The display flashes.
b. The words FAuLT and HoLd appear in the main display.
c. A fault or diagnostic message appears in the display.
d. The output signal remains at the present value or goes to the programmed fault value. Permitted values
are between 3.80 and 22.00 mA.
e. If the transmitter is in HoLd when the fault occurs, the output remains at the programmed hold value. To alert the
user that a fault exists, the word FAuLT appears in the main display, and the display flashes. A fault or diagnostic
message also appears.
f. If the transmitter is simulating an output current when the fault occurs, the transmitter continues to generate the simulated current. To alert the user that a fault exists, the word FAuLT appears in the display, and the display flashes.
4. dAMPEN. output dampening smooths out noisy readings. But it also increases the response time of the output. To
estimate the time (in minutes) required for the output to reach 95% of the final reading following a step change, divide
the setting by 20. Thus, a setting of 140 means that, following a step change, the output takes about seven minutes
to reach 95% of final reading. The output dampen setting does not affect the response time of the process display. The
maximum setting is 255.
5. TEST. The transmitter can be programmed to generate a test current.

MODEL 5081-T

SECTION 7.0
PROGRAMMING

7.2.3 Procedure

PRoGRAM

OutPut
EXIT

1. Press PRoG on the remote controller. The OutPut submenu appears.

ENTER

PRoGRAM

4MA
EXIT

00
. 00
ENTER

2. Press ENTER. The screen displays the 4 MA prompt. use the arrow keys to change
the setting. Press ENTER to save.

PRoGRAM

20MA
EXIT

10
. 00
ENTER

3. The screen displays the 20 MA prompt. use the arrow keys to change the setting.
Press ENTER to save.

PRoGRAM

HoLd
EXIT

21
. 00
ENTER

PRoGRAM

FAULt
EXIT

22
. 00
ENTER

4. The screen displays the HoLd prompt. use the arrow keys to change the setting to
the output desired when the transmitter is in hold. The range is 3.80 to 22.00 mA.
Entering 00.00 causes the transmitter to hold the output at the value it was when
placed in hold. The hold setting overrides the fault setting. Press ENTER to save.
5. The screen displays the FAULt prompt. use the arrow keys to change the setting to
the output desired when the transmitter detects a fault. The range is 3.80 to 22.00 mA.
Entering 00.00 causes the transmitter to hold the output at the value it was when the
fault occurred. Press ENTER to save.

PRoGRAM

dPn
EXIT

000
ENTER

6. The screen displays the dPn prompt. use the arrow keys to change the setting. The
range is 0 to 255. Press ENTER to save.

PRoGRAM

test
EXIT

12
. 00
ENTER

7. The screen displays the tESt prompt. use the arrow keys to enter the desired test current. Press ENTER to start the test. Press EXIT to end the test.
8. Press RESET to return to the process display.

MODEL 5081-T

SECTION 7.0
PROGRAMMING

7.3 TEMP
7.3.1 Purpose
This section describes how to do the following:
1. Enable and disable automatic temperature compensation
2. Set a manual temperature compensation value for conductivity measurements
3. Tell the transmitter the type of temperature element in the sensor
7.3.2 Definitions
1. AuToMATIC TEMPERATuRE CoMPENSATIoN. Conductivity measurements are directly affected by temperature. A
correction equation in the software automatically corrects for changes caused by temperature. In automatic temperature correction, the transmitter uses the temperature measured by the sensor for all calculations in which temperature
is used.
2. MANuAL TEMPERATuRE CoMPENSATIoN. In manual temperature compensation, the transmitter uses the temperature entered by the user as the reference temperature for corrections of conductivity readings. It does not use the
actual process temperature.
CAUTION
Changing the reference temperature from the default 25°C (77°F) can have large
effects on the conductivity readings and will require different temperature slopes.

7.3.3 Procedure
1. Press PRoG on the remote controller.

PRoGRAM

tEMP
EXIT

2. Press NEXT until the tEMP submenu appears. Press ENTER.
NEXT

ENTER

PRoGRAM

tAUtO
EXIT

ON
ENTER

PRoGRAM

tMAn
EXIT

025
.0
ENTER

3. The screen displays the tAUtO (automatic temperature compensation) prompt.
Press é or ê to toggle between On and OFF. Press ENTER to save.

4. If you disable tAuto, the tMAN prompt appears. use the arrow keys to change the
temperature to the desired value. To enter a negative number, press è or ç until no
digit is flashing. Then press é or ê to display the negative sign. The temperature
entered in this step will be used in all measurements, no matter what the
process temperature is. Press ENTER to save.

5. Press RESET to return to the process display.

MODEL 5081-T

SECTION 7.0
PROGRAMMING

7.4 DISPLAy
7.4.1 Purpose
This section describes how to do the following:
1. Configure the transmitter to measure conductivity, resistivity, or set up a custom curve
2. Set the temperature units to °C or °F
3. Set the output to current or percent of full scale
4. Enter a security code.
7.4.2 Definitions
1. MEASuREMENT. The transmitter can be configured to measure conductivity in mS/cm or resistivity in Megohms, or
configured with a 3-5 point custom curve for special applications.
2. ouTPuT CuRRENT. The transmitter generates a 4-20 mA output signal directly proportional to the conductivity or resistivity of the sample. The output signal can be displayed as current (in mA) or as percent of full scale.
5. SECuRITY CodE. The security code unlocks the transmitter and allows access to all menus.
7.4.3 Procedure
PRoGRAM

1. Press PRoG on the remote controller.

dISPLAY
EXIT

ENTER

PRoGRAM

tYPE
EXIT

2. Press NEXT until the diSPLAy submenu appears. Press ENTER.
3. Press é or ê to display the desired measurement. Press ENTER to save.

Conduc
ENTER

COnduc
nAOH
HCL
H2SO4L
H2SO4H
CuSt

Conductivity
Sodium Hydroxide 0-15%
Hydrochloric Acid 0-16%
Sulfuric Acid 0-30%
Sulfuric Acid 96-99.7%
Custom Curve

4. tEMP will appear. Press é or ê to display the desired temperature reading, C or F.
Press ENTER.
5. OUtPUt will appear. Press é or ê to display the desired 4-20 output value, Cur or %.
Press ENTER.
6. COdE will appear. using the arrow keys on the remote control, enter the desired 3-digit
security code for accessing the Calibration, Program, and diagnostic functions via the
Remote Control handheld. Press ENTER. The dISPLAy mnemonic will appear.

MODEL 5081-T

SECTION 7.0
PROGRAMMING

7.5 HART
In multi-drop operation, polling addresses can be more conveniently set and debugging more conveniently performed
using the infrared remote controller.
PRoGRAM

1. Press PRoG on the infrared remote controller.

HArt
EXIT

Address
EXIT

PreAMb
EXIT

ENTER

00
ENTER

2. Press NEXT until the screen at left appears. Press ENTER.
3. The HART menu tree is shown at left. use the arrow keys to change settings.
Press ENTER to store. Press NEXT to move to the next item on the menu.

ENTER

burSt Off
EXIT

Id
EXIT

ENTER

0000000
NEXT

ENTER

MODEL 5081-T

SECTION 7.0
PROGRAMMING

7.6 SETUP CUST

t ref

The Model 5081-T contains a curve fitting program that can create a second order curve for
3 to 5 user supplied data points. If only two points are entered, a straight line will be used.
These points are from numerical data previously collected that is entered via the keypad. All
data point must be approximately the same reference temperature.
Best results will be obtained by selecting data points that are representative of the typical
operating range and are at least 5% different conductivity values. Plotting the graph of conductivity vs. concentration for the data points of interest before using this procedure is highly
recommended. This will insure that unsuitable points (i.e. two concentrations with the same
conductivity) and critical points (that best describe the curve) can be determined. All data
points should be either on the rising side of the conductivity versus concentration curve or the
falling side, but not both (i.e. both side of the conductivity maximum or minimum). Following
these guideline will simplify the data entry procedure and provide optimum results.
The first point entered "Cond 1"should be at the normal operating condition. other points,
both above and below "Cond 1" can then be entered. Very nonlinear conductivity curves may
need additional points to characterize these regions. do not use the same data for more than
one point and only use real data - do not interpolate.
NOTE
The default values for the custom curve are three data points, reference temperature of 25°C and a linear temperature slope of 2%/°C. This combination will yield
the best results in most applications. If normal operation is over 40°C or under
10°C, the reference temperature should be changed to the normal process temperature. If the temperature slope at the reference temperature is known, it can be
used.

25
.0

Units µµS
num pts
µµS

Cond 1

.
0000

µµS

.
0000

Cond 2

.
0000

µµS

.
0000

Cond 3

.
0000

Calc Cond
Apply Cust

7.6.1 Procedure
1. From the main menu, press PRoG; then press NEXT four times. SetUP CuSt will
appear.

PRoGRAM

t ref
EXIT

ENTER

2. Press ENTER. t rEF will appear. If needed, change the reference temperature from
the factory default 25°C (77°F) to a different reference temperature for the process.
Press ENTER.

PRoGRAM

UnIt
EXIT

ENTER

PRoGRAM

Num Pts
EXIT

ENTER

3. UnIt will appear. Press é or ê to select the desired measurement units: µS (microSiemens), nS (milliSiemens), none (no units displayed), % (percent), or ppn (parts per
million); then press ENTER.
4. NUM PtS will appear. Press é or ê to select the desired number of data points for a
custom conductivity curve. Selecting 2 will generate a linear relationship for conductivity and concentration at the given reference temperature.
a. Enter the concentration for Pt. 1 (displayed as µS 1). Press ENTER.
b. Enter the known conductivity for Pt. 1 in µS/cm. Press ENTER.
c.

PRoGRAM

Calc Cust
EXIT

ENTER

Complete this process for additional known data points. Press ENTER.

5. CALC Cust will appear. Press ENTER. PrOCESSinG will appear briefly; then APPLy
CUSt will appear. Press ENTER to enter the custom curve into memory and return to
the SetUP CuSt screen.
The Custom curve will now be used to display and output all conductivity (or resistivity)
measurements if Cust is selected in the display menu for measurement type.

MODEL 5081-T

SECTION 7.0
PROGRAMMING

7.7 RANGE
7.7.1 Purpose
This section provides the steps to select automatic ranging or a specific fixed range of measurement. Five specific conductance ranges are selectable. Setting the Model 5081 to a fixed range reduces response time.
The following conductance ranges are available:
Setting

Measurement Range Over Range warning Limit

Auto

0uS to 1400mS

None

1400mS

550mS to 1400mS

None

550mS

200mS to 550mS

570mS

200mS

33mS to 200mS

207mS

33mS

3000uS to 33mS

34mS

3mS

0uS to 3000uS

3400uS

NOTE: The selection between automatic ranging or a specified fixed range of measurement range can oNLY be done
using the IRC/Infrared Remote Controller. This selection cannot be done via HART or FouNdATIoN Fieldbus hosts or
configurators.
7.7.2 Procedure
1. Press PROG.
2. Press NExT five times.

rAngt (range) will appear.

3. Press ENTER. The default setting Auto will appear. This indicates that Model 5081 is in auto ranging mode.
4. To set a fixed conductance range, press the down arrow key ê until the desired measurement range appears.
1400mS, 550mS, 200mS, 33mS and 3mS will appear when pressing the down arrow é successively.
5. When the desired range is reached, press ENTER. This disables auto ranging and limits the measurement to the
selected range.
6. Press NExT to move to the next Programming menu item.

7.8 DEFAULT
7.8.1 Purpose
This section describes how to erase ALL user-defined configuration settings and return the transmitter to factory default
settings. All custom curve values and settings will be deleted.
7.8.2 Procedure
1. Press PRoG on the remote controller.
PRoGRAM

dEFAULt
EXIT

ENTER

PRoGRAM

FActorY nO
EXIT

2. Press NEXT until the dEFAULt appears in the display. Press ENTER.
3. use é or ê to toggle between nO and yES. With yES showing, press ENTER to return
to factory default settings.

ENTER

MODEL 5081-T

SECTION 8.0
FOUNDATION FIELDBUS OPERATION

SECTION 8.0
FOUNDATION FIELDBUS OPERATION
This section covers basic transmitter operation and software functionality. For detailed descriptions of the function blocks
common to all Fieldbus devices, refer to Fisher-Rosemount Fieldbus FouNdATIoN Function Blocks manual, publication
number 00809-001-4783.
Figure 8-1 illustrates how the pH/oRP signal is channelled through the transmitter to the control room and the
FouNdATIoN Fieldbus configuration device.

Function Blocks
• AI1
• AI2
• Al3
• PID
•
•
•
•
•
•
•

sensor type
engineering units
reranging
damping
temperature compensation
calibration
diagnostics

SENSOR

FIGURE 8-1. Functional Block Diagram for the Model 5081-T-FF Conductivity Transmitter
with FOUNDATION Fieldbus.
Software Functionality. The Model 5081-T software is
designed to permit remote testing and configuration of the
transmitter using the Fisher-Rosemount deltaV Fieldbus
Configuration Tool, or other FouNdATIoN fieldbus compliant host.
Transducer Block. The transducer block contains the actual measurement data. It includes information about sensor
type, engineering units, reranging, damping, temperature
compensation, calibration, and diagnostics.
Resource Block. The resource Block contains physical
device information, including available memory, manufacturer identification, type of device, and features.
54

FOUNDATION fieldbus Function Blocks. The Model
5081-T includes three Analog Input (AI) function blocks and
one PId function block as part of its standard offering.
Analog Input. The Analog Input (AI) block processes
the measurement and makes it available to other function blocks. It also allows filtering, alarming, and engineering unit change.
PID. The PId function block combines all of the necessary logic to perform proportional/integral/derivative
(PId) control. The block supports mode control, signal
scaling and limiting, feedforward control, override
tracking, alarm limit detection, and signal status propagation.

MODEL 5081-T

SECTION 9.0
OPERATION wITH MODEL 375

SECTION 9.0
OPERATION wITH MODEL 375
9.1

Note on Model 375 or 475 Communicator

The Model 375 or 475 Communicator is a product of Emerson Process Management, Rosemount Inc. This section
contains selected information on using the Model 375 or 475 with the Rosemount Analytical Model 5081-T-HT
Transmitter. For complete information on the Model 375 or 475 Communicator, see the Model 375 or 475 instruction manual. For technical support on the Model 375 or 475 Communicator, call Emerson Process Management at
(800) 999-9307 within the united States. Support is available worldwide on the internet at http://rosemount.com.
Note: Model 475 Communicator does not support FouNdATIoN Fieldbus on Model 5081-T-FF.

9.2

Connecting the Communicator
CAUTION

Figure 9-1 shows how the Model 475 or 375 Communicator connects to
the output lines from the Model 5081-T-HT Transmitter.

For intrinsically safe CSA and FM
wiring connections, see the Model
375 instruction manual.

4-20 mA + digital
250
ohm

Model 5081-T
Conductivity
Transmitter

Control System

Model 375
or 475
Communicator
(“Configurator”)

Bridge

Computer

FIGURE 9-1. Connecting the HART Communicator

MODEL 5081-T

SECTION 9.0
OPERATION wITH MODEL 375

9.3

Operation

9.3.1

Off-line and On-line Operation

The Model 375 Communicator features off-line and on-line communications. on-line means the communicator is
connected to the transmitter in the usual fashion. While the communicator is on line, the operator can view measurement data, change program settings, and read diagnostic messages. off-line means the communicator is not
connected to the transmitter. When the communicator is off line, the operator can still program settings into the
communicator. Later, after the communicator has been connected to a transmitter, the operator can transfer the
programmed settings to the transmitter. off-line operation permits settings common to several transmitters to be
easily stored in all of them.
9.3.2

Making HART related settings from the keypad

Calibrate
Program

Hold
Display

1. Press MENu. The main menu screen appears. Choose Program.

Output
Measurement

Temp
>>

2. Choose >>.

Security

HART
>>

3. Choose HART.

PollAddrs
Preamble

DevID
Burst

9.3.3

4. To display the device Id, choose DevID. To change the polling address,
choose PollAddrs. To make burst mode settings, choose Burst. To
change the preamble count, choose Preamble.

Menu Tree

The menu tree for the Model 375 HART communicator is on the following page. The menu tree for the Model 375
FouNdATIoN Fieldbus communicator immediately follows.
Note: Model 375 Communicator fully supports FouNdATIoN Fieldbus on Model 5081-T-FF.

MODEL 5081-T

SECTION 9.0
OPERATION wITH MODEL 375

-------------------------------------------------------------------------------5081-C/T 475, 375 Menu Tree for HART communications
-------------------------------------------------------------------------------device setup
Process variables
Cond *
Raw
Conductance
Temp
Temp res
View status
diag/Service
Test device
Loop test
View status
Master reset
Fault history
Hold mode
Calibration
Calibrate sensor
Zero in air
Zero in solution **
Adjust temperature
Calibrate input
Cell constant
Temp slope
d/A trim
diagnostic vars
Cond *
Temp
Cell constant
Zero offset
Soln offset **
Temp slope ***
Input cal factor
Basic setup
Tag
PV range values
PV LRV
PV uRV
PV
PV % rnge
FIGURE 9-2. 5081-C/T-HT HART/Model 375 Menu Tree (1 of 4)
57

MODEL 5081-T

SECTION 9.0
OPERATION wITH MODEL 375

Basic setup (continued)
device information
distributor
Model
dev id
Tag
date
Physicl signl code
Write protect
Snsr text
descriptor
Message
Revision #'s
universal rev
Fld dev rev
Software rev
Hardware rev
detailed setup
Sensors
Main sensor
PV Type [Conductivity, Resistivity, 0-12% NaoH, 0-15% HCl, 0-25% H2So4, 96-99.7% H2So4,
Custom]
PV Snsr unit [uS/cm, mS/cm, mS/m, Mohm-cm, %, ppm, _]
Cond unit [uS/cm, mS/cm, mS/m] ****
define curve ****
View custom points ****
Cell constant
Temp comp type [Linear, Neutral salt, Cation, None/off] *..
Temp slope
Ref temp ***, ****, *.
PV sensor type
Sensor information
LSL
uSL
Min span
Temperature
ATC [on, off]
Man temp
Temp unit [ºC, ºF]
Temp snsr [RTd PT100, RTd PT1000]
diag override (continued)
offset error [oN, oFF]
Zero warning [oN, oFF]
overrange [oN, oFF]
Sensor fail [oN, oFF]
FIGURE 9-2. 5081-C/T-HT HART/Model 375 Menu Tree (2 of 4)
58

MODEL 5081-T

SECTION 9.0
OPERATION wITH MODEL 375

diag override (continued)
RTd fail [oN, oFF]
Sense line open [oN, oFF]
Temp high/low [oN, oFF]
Signal condition
LRV
uRV
Ao damp
% rnge
Xfer fnctn
Ao1 lo end point
Ao1 hi end pt
output condition
Analog output
Ao1
Ao Alrm typ
Fixed
Fault
Loop test
d/A trim
HART output
PV is Cond
SV is Temp
TV is Raw
Poll addr
Burst option [PV, %range/current, Process vars/crnt]
Burst mode [off, on]
Num req preams
Num resp preams
device information
distributor
Model
dev id
Tag
date
Write protect
Snsr text
descriptor
Message
Revision #'s
universal rev
Fld dev rev
Software rev
Hardware rev
FIGURE 9-2. 5081-C/T-HT HART/Model 375 Menu Tree (3 of 4)
59

MODEL 5081-T

SECTION 9.0
OPERATION wITH MODEL 375

Local display
Ao LoI units [mA, %]
Xmtr Id
Load default Conf.
Review
PV
PV Ao
PV LRV
PV uRV
-------------------------------------------------------------------------------Notes:
*
Can be Cond, Res, NaoH, HCl, H2So4, or Custom
**
Valid only when PV Type = NaoH, HCl, 0-25% H2So4, or Custom
***
Valid only when Temp comp type = Linear
**** Valid only when PV Type = Custom
*.
Valid only when PV Sensor Type = Toroidal
*..
Valid only when PV Type = Conductivity or Resistivity

FIGURE 9-2. 5081-C/T-HT HART/Model 375 Menu Tree (4 of 4)
60

MODEL 5081-T

SECTION 9.0
OPERATION wITH MODEL 375

5081-C/T-FF/FI 375 Menu Tree

LIM_NoTIFY

-----------------------

MAX_NoTIFY

RESouRCE

FAuLT_STATE

Identification

SET_FSTATE [uninitialized, oFF, SET]

MANuFACT_Id

CLR_FSTATE [uninitialized, off, Clear]

dEV_TYPE

ALARM_SuM: disabled

dEV_REV

ACK_oPTIoN

dd_REV

Hardware

Characteristics Block Tag

MEMoRY_SIZE

TAG_dESC

FREE_TIME

Hardware Revision

MIN_CYCLE_T

Software Revision String

HARd_TYPES

Private Label distributor

NV_CYCLE_T

Final Assembly Number

FREE_SPACE

output Board Serial Number
ITK_VER

options
CYCLE_SEL

Status

CYCLE_TYPE

BLoCK_ERR

FEATuRE_SEL

RS_STATE

FEATuRES

FAuLT_STATE

download Mode

Summary Status

WRITE_LoCK

ModE_BLK: Actual

Start With defaults

ModE_BLK: Target

Write Lock definition

ALARM_SuM: Current

Plantweb Alerts

ALARM_SuM: unacknowledged

Health Index

ALARM_SuM: unreported

Recommended Action

detailed Status

Fail Active

Process

Fail Mask

ModE_BLK.Actual

Maintenance Active

ModE_BLK.Target

Maintenance Mask

ModE_BLK.Permitted

Advisory Active

STRATEGY

Advisory Mask

ALERT_KEY

Methods

SHEd_RCAS

Master reset

SHEd_RouT

Self test

GRANT_dENY: Grant

dd Version Info

GRANT_dENY: deny
Alarms
WRITE_PRI
CoNFIRM_TIME

TRANSduCER
Status
ModE_BLK: Actual
FIGURE 9-3. 5081-C/T-FF/FI Model 375 Menu Tree (1 of 10)
61

MODEL 5081-T

SECTION 9.0
OPERATION wITH MODEL 375

Transducer Error

Conductance offset

ST_REV

Solution/Conductivity offset

BLoCK_ERR

Input cal factor

Additional transmitter status

Temperature calibration offset

Fault history 0

Snsr Cal Meth

Fault history 1

Snsr Cal date

Fault history 2

Temperature Compensation

Block Mode

Secondary value units

ModE_BLK: Actual

Sensor temperature compensation

ModE_BLK: Target

Sensor temp manual value

ModE_BLK: Permitted

Temp comp type

STRATEGY

Temperature slope

ALERT_KEY

Raw RTd ohms

Characteristics Block Tag

Sensor type temp

TAG_dESC

Custom Curve

Measurements

Reset transducer/Load factory defaults

Prim Val Type

Identification

Primary Val: Primary Val

Software revision level

Primary Val: Status

Hardware revision level

Primary Value Range: Eu at 100%

LoI security code

Primary Value Range: Eu at 0%

Sensor S/N

Secondary variable: Value

Final assembly number

Secondary variable: Status

AI blocks simulation

Raw RTd ohms

AI1

Raw PV: Raw PV

AI2

Raw PV: Status

AI3

Conductance

Quick Config

Calibration

AI Channel

PV Cal

L_TYPE

Sensor Zero

Xd_SCALE: Eu at 100%

SV Cal

Xd_SCALE: Eu at 0%

Calibrate Meter

Xd_SCALE: units Index

Configuration

Xd_SCALE: decimal

Change PV Type

ouT_SCALE: Eu at 100%

Sensor type conductivity

ouT_SCALE: Eu at 0%

Prim Val Type

ouT_SCALE: units Index

Conductivity unit

ouT_SCALE: decimal

diagnostic override

Common Config

Calibration Parameters
Cell constant

ACK_oPTIoN
ALARM_HYS

FIGURE 9-3. 5081-C/T-FF/FI Model 375 Menu Tree (2 of 10)
62

MODEL 5081-T

SECTION 9.0
OPERATION wITH MODEL 375

ALERT_KEY

BLoCK_ERR

HI_HI_LIM

FIELd_VAL: Status

HI_HI_PRI

FIELd_VAL: Value

HI_LIM

ModE_BLK: Target

HI_PRI

ModE_BLK: Actual

Io_oPTS

ModE_BLK: Permitted

L_TYPE

ModE_BLK: Normal

Lo_Lo_LIM

out: Status

Lo_Lo_PRI

out: Value

Lo_LIM

PV: Status

Lo_PRI

PV: Value

ModE_BLK: Target

Status

ModE_BLK: Actual
ModE_BLK: Permitted

BLoCK_ERR
other

ModE_BLK: Normal

TAG_dESC

ouT_SCALE: Eu at 100%

GRANT_dENY: Grant

ouT_SCALE: Eu at 0%

GRANT_dENY: deny

ouT_SCALE: units Index

uPdATE_EVT: unacknowledged

ouT_SCALE: decimal

uPdATE_EVT: update State

PV_FTIME

uPdATE_EVT: Time Stamp

Advanced Config

uPdATE_EVT: Static Rev

LoW_CuT

BLoCK_ALM: unacknowledged

SIMuLATE: Simulate Status

BLoCK_ALM: Alarm State

SIMuLATE: Simulate Value

All

SIMuLATE: Transducer Status

Characteristics: Block Tag

SIMuLATE: Transducer Value

ST_REV

SIMuLATE: Simulate En/disable

TAG_dESC

ST_REV

STRATEGY

STATuS_oPTS

ALERT_KEY

STRATEGY

ModE_BLK: Target

Xd_SCALE: Eu at 100%

ModE_BLK: Actual

Xd_SCALE: Eu at 0%

ModE_BLK: Permitted

Xd_SCALE: units Index

ModE_BLK: Normal

Xd_SCALE: decimal

BLoCK_ERR

I/o References

PV: Status

AI Channel

PV: Value

Connectors

out: Status

out: Value

SIMuLATE: Simulate Status

online

SIMuLATE: Simulate Value
FIGURE 9-3. 5081-C/T-FF/FI Model 375 Menu Tree (3 of 10)
63

MODEL 5081-T

SECTION 9.0
OPERATION wITH MODEL 375

SIMuLATE: Transducer Status

Lo_LIM

SIMuLATE: Transducer Value

Lo_Lo_PRI

SIMuLATE: Simulate En/disable

Lo_Lo_LIM

Xd_SCALE: Eu at 100%

HI_HI_ALM: unacknowledged

Xd_SCALE: Eu at 0%

HI_HI_ALM: Alarm State

Xd_SCALE: units Index

HI_HI_ALM: Time Stamp

Xd_SCALE: decimal

HI_HI_ALM: Subcode

ouT_SCALE: Eu at 100%

HI_HI_ALM: Value

ouT_SCALE: Eu at 0%

HI_ALM: unacknowledged

ouT_SCALE: units Index

HI_ALM: Alarm State

ouT_SCALE: decimal

HI_ALM: Time Stamp

GRANT_dENY: Grant

HI_ALM: Subcode

GRANT_dENY: deny

HI_ALM: Float Value

Io_oPTS

Lo_ALM: unacknowledged

STATuS_oPTS

Lo_ALM: Alarm State

AI Channel

Lo_ALM: Time Stamp

LoW_CuT

Lo_ALM: Subcode

PV_FTIME

Lo_ALM: Float Value

FIELd_VAL: Status

Lo_Lo_ALM: unacknowledged

FIELd_VAL: Value

Lo_Lo_ALM: Alarm State

uPdATE_EVT: unacknowledged

Lo_Lo_ALM: Time Stamp

uPdATE_EVT: update State

Lo_Lo_ALM: Subcode

uPdATE_EVT: Time Stamp

Lo_Lo_ALM: Float Value

uPdATE_EVT: Static Rev

Alarm output: Status

uPdATE_EVT: Relative Index

Alarm output: Value

BLoCK_ALM: unacknowledged

Alarm select

BLoCK_ALM: Alarm State

Stddev

BLoCK_ALM: Time Stamp

Cap Stddev

BLoCK_ALM: Subcode
BLoCK_ALM: Value

PId1
Quick Config

ALARM_SuM: unacknowledged

ALERT_KEY

ALARM_SuM: unreported

CoNTRoL_oP

ALARM_SuM: disabled

dV_HI_LIM

ACK_oPTIoN

dV_Lo_LIM

ALARM_HYS

GAIN

HI_HI_PRI

HI_HI_LIM

HI_LIM

HI_PRI

Lo_LIM

HI_LIM

Lo_Lo_LIM

Lo_PRI

ouT_SCALE: Eu at 100%
FIGURE 9-3. 5081-C/T-FF/FI Model 375 Menu Tree (4 of 10)

MODEL 5081-T

SECTION 9.0
OPERATION wITH MODEL 375

ouT_SCALE: Eu at 0%

SP: Status

ouT_SCALE: units Index

SP: Value

ouT_SCALE: decimal

SP_HI_LIM

PV_SCALE: Eu at 100%

SP_Lo_LIM

PV_SCALE: Eu at 0%

Advanced Config

PV_SCALE: units Index

BK_CAL_HYS

PV_SCALE: decimal

FF_GAIN

RESET

FF_SCALE: Eu at 100%

SP: Status

FF_SCALE: Eu at 0%

SP: Value

FF_SCALE: units Index

SP_HI_LIM

FF_SCALE: decimal

SP_Lo_LIM

SHEd_oPT

Common Config

SP_RATE_dN

ALARM_HYS

SP_RATE_uP

ALERT_KEY

ST_REV

CoNTRoL_oPTS

STATuS_oPTS

dV_HI_LIM

STRATEGY

dV_Lo_LIM

TRK_SCALE: Eu at 100%

GAIN

TRK_SCALE: Eu at 0%

HI_HI_LIM

TRK_SCALE: units Index

HI_LIM

TRK_SCALE: decimal

Lo_LIM

TRK_VAL: Status

Lo_Lo_LIM

TRK_VAL: Value

ModE_BLK: Target

Connectors

ModE_BLK: Actual

BK_CAL_IN: Status

ModE_BLK: Permitted

BK_CAL_IN: Value

ModE_BLK: Normal

BK_CAL_ouT: Status

ouT_HI_LIM

BK_CAL_ouT: Value

ouT_Lo_LIM

CAS_IN: Status

ouT_SCALE: Eu at 100%

CAS_IN: Value

ouT_SCALE: Eu at 0%

FF_VAL: Status

ouT_SCALE: units Index

FF_VAL: Value

ouT_SCALE: decimal

IN: Status

PV_FTIME

IN: Value

PV_SCALE: Eu at 100%

ouT: Status

PV_SCALE: Eu at 0%

ouT: Value

PV_SCALE: units Index

TRK_IN_d: Status

PV_SCALE: decimal

TRK_IN_d: Value

RATE

TRK_VAL: Status

RESET

TRK_VAL: Value
FIGURE 9-3. 5081-C/T-FF/FI Model 375 Menu Tree (5 of 10)
65

MODEL 5081-T

SECTION 9.0
OPERATION wITH MODEL 375

online

BAL_TIME

BK_CAL_IN: Status

GRANT_dENY: Grant

BK_CAL_IN: Value

GRANT_dENY: deny

BK_CAL_ouT: Status

uPdATE_EVT: unacknowledged

BK_CAL_ouT: Value

uPdATE_EVT: update State

BLoCK_ERR

uPdATE_EVT: Time Stamp

BYPASS

uPdATE_EVT: Static Rev

CAS_IN: Status

uPdATE_EVT: Relative Index

CAS_IN: Value

BLoCK_ALM: unacknowledged

FF_VAL: Status

BLoCK_ALM: Alarm State

FF_VAL: Value

BLoCK_ALM: Time Stamp

GAIN

BLoCK_ALM: Subcode

IN: Status

BLoCK_ALM: Value

IN: Value

ALARM_SuM: Current

ModE_BLK: Target

ALARM_SuM: unacknowledged

ModE_BLK: Actual

ALARM_SuM: unreported

ModE_BLK: Permitted

ALARM_SuM: disabled

ModE_BLK: Normal

ACK_oPTIoN

ouT: Status

HI_HI_ALM: unacknowledged

ouT: Value

HI_HI_ALM: Alarm State

PV: Status

HI_HI_ALM: Time Stamp

PV: Value

HI_HI_ALM: Subcode

RCAS_IN: Status

HI_HI_ALM: Float Value

RCAS_IN: Value

HI_ALM: unacknowledged

RCAS_ouT: Status

HI_ALM: Alarm State

RCAS_ouT: Value

HI_ALM: Time Stamp

RouT_IN: Status

HI_ALM: Subcode

RouT_IN: Value

HI_ALM: Float Value

RouT_ouT: Status

Lo_ALM: unacknowledged

RouT_ouT: Value

Lo_ALM: Alarm State

SP: Status

Lo_ALM: Time Stamp

SP: Value

Lo_ALM: Subcode

TRK_IN_d: Status

Lo_ALM: Float Value

TRK_IN_d: Value

Lo_Lo_ALM: unacknowledged

TRK_VAL: Status

Lo_Lo_ALM: Alarm State

TRK_VAL: Value

Lo_Lo_ALM: Time Stamp

Status
BLoCK_ERR
other
TAG_dESC

Lo_Lo_ALM: Subcode
Lo_Lo_ALM: Float Value
dV_HI_ALM: unacknowledged
dV_HI_ALM: Alarm State
FIGURE 9-3. 5081-C/T-FF/FI Model 375 Menu Tree (6 of 10)

MODEL 5081-T

SECTION 9.0
OPERATION wITH MODEL 375

dV_HI_ALM: Time Stamp

ouT_SCALE: Eu at 100%

dV_HI_ALM: Subcode

ouT_SCALE: Eu at 0%

dV_HI_ALM: Float Value

ouT_SCALE: units Index

dV_Lo_ALM: unacknowledged

ouT_SCALE: decimal

dV_Lo_ALM: Alarm State

GRANT_dENY: Grant

dV_Lo_ALM: Time Stamp

GRANT_dENY: deny

dV_Lo_ALM: Subcode

CoNTRoL_oPTS

dV_Lo_ALM: Float Value

STATuS_oPTS

Bias

IN: Status

Error

IN: Value

SP Work

PV_FTIME

SP FTime

BYPASS

mathform

CAS_IN: Status

structreconfig

CAS_IN: Value

uGamma

SP_RATE_dN

uBeta

SP_RATE_uP

IdeadBand

SP_HI_LIM

Stddev

SP_Lo_LIM

Cap Stddev

GAIN

All

RESET
Characteristics: Block Tag

BAL_TIME

ST_REV

RATE

TAG_dESC

BK_CAL_IN: Status

STRATEGY

BK_CAL_IN: Value

ALERT_KEY

ouT_HI_LIM

ModE_BLK: Target

ouT_Lo_LIM

ModE_BLK: Actual

BKCAL_HYS

ModE_BLK: Permitted

BK_CAL_ouT: Status

ModE_BLK: Normal

BK_CAL_ouT: Value

BLoCK_ERR

RCAS_IN: Status

PV: Status

RCAS_IN: Value

PV: Value

RouT_IN: Status

SP: Status

RouT_IN: Value

SP: Value

SHEd_oPT

ouT: Status

RCAS_ouT: Status

ouT: Value

RCAS_ouT: Value

PV_SCALE: Eu at 100%

RouT_ouT: Status

PV_SCALE: Eu at 0%

RouT_ouT: Value

PV_SCALE: units Index

TRK_SCALE: Eu at 100%

PV_SCALE: decimal

TRK_SCALE: Eu at 0%

FIGURE 9-3. 5081-C/T-FF/FI Model 375 Menu Tree (7 of 10)
67

MODEL 5081-T

SECTION 9.0
OPERATION wITH MODEL 375

TRK_SCALE: units Index

dV_Lo_LIM

TRK_SCALE: decimal

HI_HI_ALM: unacknowledged

TRK_IN_d: Status

HI_HI_ALM: Alarm State

TRK_IN_d: Value

HI_HI_ALM: Time Stamp

TRK_VAL: Status

HI_HI_ALM: Subcode

TRK_VAL: Value

HI_HI_ALM: Float Value

FF_VAL: Status

HI_ALM: unacknowledged

FF_VAL: Value

HI_ALM: Alarm State

FF_SCALE: Eu at 100%

HI_ALM: Time Stamp

FF_SCALE: Eu at 0%

HI_ALM: Subcode

FF_SCALE: units Index

HI_ALM: Float Value

FF_SCALE: decimal

Lo_ALM: unacknowledged

FF_GAIN

Lo_ALM: Alarm State

uPdATE_EVT: unacknowledged

Lo_ALM: Time Stamp

uPdATE_EVT: update State

Lo_ALM: Subcode

uPdATE_EVT: Time Stamp

Lo_ALM: Float Value

uPdATE_EVT: Static Rev

Lo_Lo_ALM: unacknowledged

uPdATE_EVT: Relative Index

Lo_Lo_ALM: Alarm State

BLoCK_ALM: unacknowledged

Lo_Lo_ALM: Time Stamp

BLoCK_ALM: Alarm State

Lo_Lo_ALM: Subcode

BLoCK_ALM: Time Stamp

Lo_Lo_ALM: Float Value

BLoCK_ALM: Sub Code

dV_HI_ALM: unacknowledged

BLoCK_ALM: Value

dV_HI_ALM: Alarm State

ALARM_SuM: Current

dV_HI_ALM: Time Stamp

ALARM_SuM: unacknowledged

dV_HI_ALM: Subcode

ALARM_SuM: unreported

dV_HI_ALM: Float Value

ALARM_SuM: disabled

dV_Lo_ALM: unacknowledged

ACK_oPTIoN

dV_Lo_ALM: Alarm State

ALARM_HYS

dV_Lo_ALM: Time Stamp

HI_HI_PRI

dV_Lo_ALM: Subcode

HI_HI_LIM

dV_Lo_ALM: Float Value

HI_PRI

Bias

HI_LIM

Error

Lo_PRI

SP Work

Lo_LIM

SP FTime

Lo_Lo_PRI

mathform

Lo_Lo_LIM

structreconfig

dV_HI_PRI

uGamma

dV_HI_LIM

uBeta

dV_Lo_PRI

IdeadBand
FIGURE 9-3. 5081-C/T-FF/FI Model 375 Menu Tree (8 of 10)

MODEL 5081-T

SECTION 9.0
OPERATION wITH MODEL 375

Stddev

Finch Rec Ready Errors

Cap Stddev

Finch Rec FIFo overrun Errors

Scheduling

Finch Rec FIFo underrun Errors

detail

Finch Trans FIFo overrun Errors

Physical device Tag

Finch Trans FIFo underrun Errors

Address

Finch Count Errors

device Id

Finch Cd Errors

device Revision

Cold Start Counts

Advanced

Software Crash Counts

Stack Capabilities

Spurious Vector Counts

FasArTypeAndRoleSupported

Bus/Address Error Counts

MaxdIsapAddressesSupported

Program Exit Counts

MaxdIcepAddressesSupported

Finch Statistics 2

dIcepdeliveryFeaturesSupported

Scheduled Events

VersionofNmSpecSupported

Missed Events

AgentFunctionsSupported

Max Time Error

FmsFeaturesSupported

MId Violations

Basic Characteristics

Schedule Resync

Version

Token delegation Violations

BasicStatisticsSupportedFlag

Sum of All Time Adjustments

dIoperatFunctionalClass

Time Adjustments

dIdeviceConformance

Time updates outside of K

Basic Info

discontinuous Time updates

SlotTime

Queue overflow Statistics 1

PerdIpduPhIoverhead

Time Available

MaxResponsedelay

Normal

ThisNode

urgent

ThisLink

Time Available Rcv

MinInterPdudelay

Normal Rcv

TimeSyncClass

urgent Rcv

PreambleExtension

Time Available SAP EC dC

PostTransGapExtension

Normal SAP EC dC

MaxInterChanSignalSkew

urgent SAP EC dC

Basic Statistics

Time Available Rcv SAP EC dC

Not Supported!

Normal Rcv SAP EC dC

Finch Statistics 1

urgent Rcv SAP EC dC

Last Crash description

Queue overflow Statistics 2

Last RestartReason

Time Available SAP SM

Finch Rec Errors

Time Available Rcv SAP SM

Finch FCS Errors

Normal SAP Las
FIGURE 9-3. 5081-C/T-FF/FI Model 375 Menu Tree (9 of 10)
69

MODEL 5081-T

SECTION 9.0
OPERATION wITH MODEL 375

Normal Rcv SAP Las

ThisLink

Time Available SAP Src Sink

MinInterPdudelay

Normal SAP Src Sink

NumConsecunpolledNodeId

urgent SAP Src Sink

PreambleExtension

Time Available Rcv SAP Src Sink

PostTransGapExtension

Normal Rcv SAP Src Sink

MaxInterChanSignalSkew

urgent Rcv SAP Src Sink

TimeSyncClass

Sys Q
Link Master Parameters
dImeLinkMasterCapabilitiesVariable
PrimaryLinkMasterFlagVariable
BootoperatFunctionalClass
NumLasRoledeleg/Claim/delegTokenHoldTimeout
Link Master Info
MaxSchedulingoverhead
defMinTokendelegTime
defTokenHoldTime
TargetTokenRotTime
LinkMaintTokHoldTime
TimedistributionPeriod
MaximumInactivityToClaimLasdelay
LasdatabaseStatusSpdudistributionPeriod
Current Link Settings
SlotTime
PerdIpduPhIoverhead
MaxResponsedelay
FirstunpolledNodeId
ThisLink
MinInterPdudelay
NumConsecunpolledNodeId
PreambleExtension
PostTransGapExtension
MaxInterChanSignalSkew
TimeSyncClass
Configured Link Settings
SlotTime
PerdIpduPhIoverhead
MaxResponsedelay
FirstunpolledNodeId
FIGURE 9-3. 5081-C/T-FF/FI Model 375 Menu Tree (10 of 10)
70

MODEL 5081-T

SECTION 10.0
DIAGNOSIS AND TROUBLESHOOTING

SECTION 10.0
DIAGNOSIS AND TROUBLESHOOTING
10.1 OvERvIEw
The Model 5081-T transmitters automatically monitor for fault
conditions. The diagnose Menu allows the current variable settings to be reviewed and shows fault messages indicating problems detected. Figure 10-1 illustrates the relationship between
the diagnose Menu and its sub-menus. The mnemonics are
defined in Table 10-1.

Step 3

10.1.2 DISPLAyING DIAGNOSTIC vALUES

10.1.1 TROUBLESHOOTING
Step 1

Step 2

The dIAG key on the IRC is used to access the diagnosis Menu.
The menu flow is shown in Figure 10-1 and the mnemonics are
defined in Table 10-1.

Look for a diagnostic fault message on the display to
help pinpoint the problem. Refer to Table 10-2 for an
explanation of the message and a list of the possible
problems that triggered it.

The FAuLtS sub-menu can be entered to show the last three
faults/warnings. The most recent is displayed first; NEXT scrolls
through the remaining faults. Pressing EXIT clears all fault/warnings and returns the FAuLtS segment. disconnecting the transmitter removes all fault messages from memory. The nonE message is displayed when no faults/warnings have occurred.

Refer to the Quick Troubleshooting Guide, Table 10-3,
for common loop problems and the recommended
actions to resolve them.

Menu Segment /
Prompt Area
Calibrate Menu
Segments/Commands

CALIbrAtE
EXIT

ENTER

SEnSOr O
EXIT

ENTER

tEMP AdJ
EXIT

ENTER

Follow the step-by-step troubleshooting flow chart,
offered in Figure 10-5, to diagnose less common or
more complex problems.

Calibrate Program diagnose
Id
000
Exit

CURRENT OPERATING MENU

Enter

Program Menu
Segments/Commands

OutPut
EXIT

DIAGNOSE MENU
Segments/Commands

AbS

ENTER

EXIT

ENTER

EXIT

CELL
dISPLAY
EXIT

ENTER

0 air

tEMP
EXIT

KEyPRESS COMMANDS

EXIT

ENTER

COnSt

ENTER

tSLOPE
mtr CaL
EXIT

Hart
ENTER

CELL COnSt
EXIT

EXIT

ENTER

EXIT

ENTER

setup Cust
EXIT

ENTER

tEMP SLOPE
NEXT

ENTER

Output Cal
EXIT

ENTER

default
EXIT

ENTER

5081-t-Ht
EXIT

ENTER

soft
EXIT

EXIT

ENTER

hard
ENTER

EXIT

ENTER

faults
EXIT

ENTER

FIGURE 10-1. Diagnose Menu Segments
71

MODEL 5081-T

SECTION 10.0
DIAGNOSIS AND TROUBLESHOOTING

TABLE 10-1. Diagnostic variables Mnemonics

AbS
0 air
CELL Const
tSLOPE
soft
Hard
faults
nonE

Absolute conductivity (µS/cm or mS/cm)
Sensor zero in air
Sensor cell constant
Temperature slope in %/ °C
Software version
Hardware version
Show fault messages
No fault messages in memory

MODEL 5081-T

SECTION 10.0
DIAGNOSIS AND TROUBLESHOOTING

10.2 FAULT CONDITIONS
Three classes of error conditions/problems are detected
and differentiated between by the diagnostic program.
System disabling problems are faults caused by failures
in the loop or significant variations in the process.
System non-disabling problems are warnings and deal
with input or A to d conversion settings. The third class
of detected problems are error messages and occur
when the calibration limits are exceeded.
10.2.1 DISABLING FAULTS
1. Both FAuLT and HoLd annunciation fields will
become active (see Figure 10-3).
2.
3.

The process variable will flash at the rate of 1 second oN and 1 second oFF.
The appropriate fault message alternates with the
normal Temperature/Current output display (see
Figure 10-2).

F
A
u
L
T

5000

The output current loop will be forced to the non-zero
fault value entered in Step 3 of Section 7.2 or held at
last value if fault value=0, if the transmitter is not in
the TEST, HoLd, or Multidrop operational modes.

A 0-1 mA output signal is available for external use
when system disability conditions are active. These
conditions drive this output to 1 mA. Please contact
factory for specific application information.

10.2.2 NON- DISABLING wARNINGS
When a non-system-disabling condition occurs, a warning message is displayed. The process variable does not
flash. The appropriate message alternates with the
Temperature/Current output display (see Figure 10-3).
If more than one fault exists, the display will sequence
through each diagnostic message. This will continue
until the cause of the fault has been corrected.

µS/cm

5000

µS/cm

H
O
L
D

CALIBRATE

PRoGRAM dIAGNoSE

“LInE FAIL”
ExIT

ENTER

FIGURE 10-2. Disabling Fault Annunciation

CALIBRATE

PRoGRAM dIAGNoSE

“InPut WjArn”
ExIT

ENTER

FIGURE 10-3. warning Annunciation

MODEL 5081-T

SECTION 10.0
DIAGNOSIS AND TROUBLESHOOTING

10.3 DIAGNOSTIC MESSAGES
The Model 5081-T transmitter’s diagnostics constantly monitor the conductivity loop for possible problems. If an operational problem is encountered, check the display for a fault or error message. These are displayed in the
Temperature/Current output segment of the display. Note the message and refer to Table 10-2 for a description of possible problems that may have triggered the diagnostic message.
TABLE 10-2. Diagnostic Fault Messages.
Message
Faults

Description

Action

tEMP LO

Temperature is too low.

tEMP HI

Temperature is too high.

Rtd FAIL

The RTd sense line fault limits have been exceeded
for the sensor.

CPU FAIL

The CPu has failed during RAM or EEPRoM
verification.
The transmitter has not been accurately factory calibrated.
The PRoM failed the check-sum test.
A wrong value was detected during power-up.

Check wiring or sensor/process temp.
Check RTd.
Check wiring or sensor/process temp.
Check RTd.
Check wiring or Check Program/Temp
menu setting to verify the 100-3 or
100-4 sensor type connected.
Recycle. If persistent contact the factory.

FACt FAIL
rOM FAIL
CYCLE PWJr
warnings
InPut WJArn
Over rAngE
AdC error

Errors
CAL Err or
Offset Err

The compensated conductivity limit of 9999 ms/cm is
exceeded.
The current range setting has been exceeded.
An analog to digital conversion error has occurred.
(This may come up normally while readings are
changing quickly)

A calibration error has occurred between the standard
and process.

-0- Err

The limit for T-2 in a two point calibration has been
exceeded.
Sensor Zero limit has been exceeded

WjRITE Err

An attempt to the write on the EEPRoM has failed.

tSLOPE Err

Contact factory.
Contact factory.
Recycle the power.

Verify the conductivity range setting.
Verify the 4 and 20 mA settings in the
Program/output menu.
Recycle the power.

Press RESET and repeat.
Check calibration standards and unit
configuration.
Press RESET and repeat the
calibrate/temp. slope menu setting.
Press RESET and repeat the calibrate/sensor menu setting.
The jumper JP-1 on the CPu board
has been removed.

MODEL 5081-T

SECTION 10.0
DIAGNOSIS AND TROUBLESHOOTING

10.4 QUICK TROUBLESHOOTING GUIDE
Table 10-3 identifies some of the more common symptoms and suggests actions to help resolve a problem. In general,
wiring is the most common cause.
TABLE 10-3. Quick Troubleshooting Guide.
SyMPTOM
Wrong temperature reading.
Suspected temp. compensation problem.

ACTION

display segments missing. display inoperable.
Analyzer locks up; won't respond.

Perform a temperature standardization. Verify sensor's RTd.
Resistance vs. temp.; see Section 8.6 Temperature is out of range of sensor.
Check wiring.
Replace display board.
Replace PCB stack

Erratic displays.
Transmitter won't respond to IRC key presses.

Press Reset.
Check batteries in IRC.
Check sensors in process.
Verify and clean ribbon cable connection on CPu board. Check batteries in IRC.

Key press gives wrong selection.
Wrong or no current output.

Replace IRC. Check ribbon cable connection on CPu board.
Verify that output is not being overloaded; remove load; replace PCB stack.

No display or indicators.
”Excess Input”
“Reverse Input”
“Check sensor zero”

Replace PCB stack.
Check sensor wiring.
Perform sensor zero.
Analyzer will not zero. Place sensor in air and access zero routine.

10.4.1 FIELD TROUBLESHOOTING
When it is apparent by grab sample analysis that the
transmitter is giving inaccurate readings, the following procedure should be followed.

C. If the previous two steps did not indicate the source of
the problem, the next step is to isolate the problem to
either the sensor or the transmitter.

A. The sensor surfaces need to be totally wetted by the
process and air bubbles must no be trapped in the
vicinity of the electrodes. If air bubbles are found, the
installation technique should be altered to eliminate
this source of error.

d. The first step in troubleshooting the sensor is to disconnect it from the transmitter, remove the sensor from the
process and thoroughly dry the sensor electrodes. Refer
to sensor manual for additional troubleshooting checks.

B. A quick visual inspection of the installation may identify
the problem. Check to be sure that the transmitter is
mounted securely and that its internal parts are properly connected. Next check all input and output wiring.

E. To troubleshoot the transmitter independently of the
sensor, use an appropriate resistor across the temperature input connectors and connect the conductivity
inputs to resistance decade box. Refer to Figure 10-7
to reference the conductivity simulation values.

MODEL 5081-T

SECTION 10.0
DIAGNOSIS AND TROUBLESHOOTING

10.5 SySTEMATIC TROUBLESHOOTING
If the Quick Troubleshooting Guide does not resolve the error, try the step-by-step approach offered in Figure 10-4.
Step 1 Follow the troubleshooting flow chart.
Step 2 Refer to the tests and instructions indicated by the flow chart to diagnose the problem.

NOTE:
Before starting this procedure
make sure that all wiring is correct.

Conductivity Measurement
Problem (in the process)

NOTE:
This step is for normal contacting only, not for low conductivity
or resistivity.

Remove the sensor from process
and place sensor in air. Zero instrument. Refer to Section 5.3 & 5.4.

NO
oK?

yES

Place sensor in process and
standardize. Refer to Section 5.3.

yES
oK?

Restart
Transmitter

NO
Check diagnostic
messages
Refer to Table 10-2

Check wiring
for short

Consult
Service Center

Remove sensor from process and test in known
conductivity solution or against a certified
conductivity instrument

yES

NO
oK?

yES

FIGURE 10-4. Troubleshooting Flow Chart
76

Check for ground
loops and/or
improper installation

does problem
still exist?

MODEL 5081-T

SECTION 10.0
DIAGNOSIS AND TROUBLESHOOTING

Table 10-4. RTD Resistance values.

10.6 RTD RESISTANCE vALUES
Table 10-4 is a ready reference of RTd resistance values
at various temperatures. These are used for test and
evaluation of the sensor.

Temperature
Pt-100
Pt-1000
(°C)
Resistance (ohms) Resistance (ohms)
100.00
1000
0
10
103.90
1039
20
107.79
1078
25
109.62
1096
30
111.67
1117
40
115.54
1155
50
119.40
1194
60
123.24
1232
70
127.07
1271
80
130.89
1309
90
134.70
1347
100
138.50
1385

NOTE
Resistance values are read across the RTd
element and are based on the manu facturer ’s stated values (±1%). Allow
enough time for the RTd element in the
sensor to stabilize to the surrounding
temperature (10 min).

use the following formula to determine the appropriate resistance value to use to simulate a
conductivity value:
FORMULA:
cell constant value x 1,000,000
desired simulated conductivity in ms/cm

resistance in ohms

ExAMPLE:
.01 x 1,000,000
10 ms/cm

use 1,000 ohm resistance

FIGURE 10-5. Conductivity Determination

MODEL 5081-T

SECTION 10.0
DIAGNOSIS AND TROUBLESHOOTING

10.7 wARNING AND FAULT MESSAGES
The Model 5081-T transmitter continuously monitors the sensor and transmitter for conditions that cause erroneous measurements. When a problem occurs, the transmitter displays either a warning or fault message. A warning alerts the user
that a potentially disabling condition exists. There is a high probability that the measurement is in error. A fault alerts the
user that a disabling condition exists. If a fault message is showing, all measurements should be regarded as erroneous.
when a wARNING condition exists:
1. The main display reading remains stable; it does not flash.
2. A warning message appears alternately with the temperature and output readings in the second line of the display. See
Section 10.3 for an explanation of the warning messages and suggested ways of correcting the problem.
when a FAULT exists:
1. The main display reading flashes.
2. The words FAuLT and HoLd appear in the main display window.
3. A fault message appears alternately with the temperature and output readings in the second line of the display. See
Section 10.3 for an explanation of the fault messages and suggested ways of correcting the problem.
4. The output current will remain at the present value or go to the programmed fault value. See Section 7.2 for details on
how to program the current generated during a fault condition.
5. If the transmitter is in HoLd when the fault occurs, the output remains at the programmed hold value. To alert the user
that a fault exists, the word FAuLT appears in the main display, and the display flashes. A fault or diagnostic message
also appears.
6. If the transmitter is simulating an output current when the fault occurs, the transmitter continues to generate the simulated current. To alert the user that a fault exists, the word FAuLT appears in the display, and the display flashes.

MODEL 5081-T

10.8

SECTION 10.0
DIAGNOSIS AND TROUBLESHOOTING

TROUBLESHOOTING wHEN A FAULT OR wARNING MESSAGE IS SHOwING

Message

Explanation

See Section

OuEr rAnGE

over range, measurement exceeds display limit

10.8.1

SEnSor FAIL

Bad sensor, sensor current is a large negative number

10.8.2

CAL Error

Calibration error, sensitivity (nA/ppm) is too high or too low

10.8.3

nEEd 0 CAL

Sensor needs re-zeroing, reading is too negative

10.8.4

rtd FAIL

Bad temperature reading

10.8.5

TEMP HI

Temperature reading exceeds 275°C when auto temp is selected

10.8.5

TEMP LO

Temperature reading is less than -25°C when auto temp is selected

10.8.5

SenSE OPEn

Sense line is not connected

10.8.6

OFFSEt Err

Zero offset during standardization exceeds programmed limit

10.8.7

FACt FAIL

unit has not been factory-calibrated

10.8.8

CPU FAIL

Internal CPu tests have failed

10.8.9

ROM FAIL

Internal memory has failed

10.8.9

AdC Error

Analog to digital conversion failed

10.8.10

10.8.1 OuEr rAnGE and AMP FAIL.
These error messages appear if the sensor current is too high. Normally, excessive sensor current implies that the sensor
is miswired or the sensor has failed.
1. Verify that wiring is correct and connections are tight. Be sure to check connections at the junction box if one is being
used. See Section 3.0.
2. Replace the sensor membrane and electrolyte solution and clean the cathode if necessary. See the sensor instruction
sheet for details.
3. Replace the sensor.

10.8.2 SEnSor FAIL.
Bad sensor means that the sensor current is a large negative number.
1. SEnSor FAIL may appear for a while when the sensor is first placed in service. observe the sensor current (go to
SEnSor Cur under the diagnostic menu). If the sensor current is moving in the positive direction, there is probably
nothing wrong and the error message should soon disappear.
2. Verify that wiring is correct. Pay particular attention the anode and cathode connections.
3. Verify that the transmitter is configured for the correct measurement. Configuring the measurement sets (among other
things) the polarizing voltage. Applying the wrong polarizing voltage to the sensor can cause a negative current.
4. Replace the sensor membrane and electrolyte solution and clean the cathode if necessary. See the sensor instruction
sheet for details.
5. Replace the sensor.

MODEL 5081-T

SECTION 10.0
DIAGNOSIS AND TROUBLESHOOTING

10.8.3 CAL Error
At the end of the calibration step, the transmitter calculates the sensitivity in nA/ppm. If the sensitivity is outside the range
normally expected, the transmitter displays the CAL Error message and the transmitter does not update the calibration.
For assistance, refer to the troubleshooting section specific for the sensor.
10.8.4 nEEd 0 CAL
nEEd 0 CAL means that the concentration of the analyte is too negative.
1. Check the zero current (go to 0 CurrEnt under the diagnostic menu). If the zero current is appreciably greater than the
measurement current, the nEEd 0 CAL warning will appear.
2. Verify that the zero current is close to the value given in the calibration section for the analyte being determined.
3. Rezero the sensor. Refer to the calibration and troubleshooting sections for the sensor for more information.
10.8.5 rtd FAIL, TEMP HI, and TEMP LO
These messages usually mean that the RTd is open or shorted or there is an open or short in the connecting wiring.
1. Verify all wiring connections, including wiring in a junction box if one is being used.
2. disconnect the RTd IN, RTd SENSE, and RTd RETuRN leads or the thermistor leads at the transmitter. Be sure to
note the color of the wire and where it was attached. Measure the resistance between the RTd IN and RETuRN leads.
For a thermistor, measure the resistance between the two leads. The resistance should be close to the value in the
table in Section 10.6. If the temperature element is open or shorted, replace the sensor. In the meantime, use manual temperature compensation.
10.8.6 SenSE OPEn
Most Rosemount Analytical sensors use a Pt100 or Pt1000 in a three-wire configuration. The in and return leads connect
the RTd to the measuring circuit in the analyzer. A third wire, called the sense line, is connected to the return lead. The
sense line allows the analyzer to correct for the resistance of the in and return leads and to correct for changes in lead wire
resistance with changes in ambient temperature.
1. Verify all wiring connections, including wiring in a junction box if one is being used.
2. disconnect the RTd SENSE and RTd RETuRN wires. Measure the resistance between the leads. It should be less
than 5 W. If the sense line is open, replace the sensor as soon as possible.
3. The transmitter can be operated with the sense line open. The measurement will be less accurate because the
transmitter can no longer compensate for lead wire resistance. However, if the sensor is to be used at approximately
constant ambient temperature, the lead wire resistance error can be eliminated by calibrating the sensor at the
measurement temperature. Errors caused by changes in ambient temperature cannot be eliminated. To make the
error message disappear, connect the RTd SENSE and RETuRN terminals with a jumper.

MODEL 5081-T

SECTION 10.0
DIAGNOSIS AND TROUBLESHOOTING

10.8.7 OFFSEt Err
The OFFSEt Err message appears if the zero offset (in mV) exceeds the programmed limit. Before increasing the limit to
make the OFFSEt Err message disappear, check the following:
1. Verify that the reference meter is working properly and is properly calibrated.
2. Verify that the process sensor is working. Check its response in a solution of known conductivity.
3. If the transmitter is standardized against the conductivity determined in a grab sample, be sure to measure the conductivity before the temperature of the grab sample changes more than a few degrees.
4. Verify that the process sensor is fully immersed in the liquid. If the sensor is not completely submerged, it may not
properly measure the conductivity of the process liquid.
5. Check the sensor for cleanliness. If the sensor looks fouled or dirty, clean it. Refer to the sensor instruction manual for
cleaning procedures.
10.8.8 FACt FAIL
FACt FAIL means the unit has not been factory calibrated. Call the factory. The transmitter will probably need to be
returned to the factory for calibration.
10.8.9 CPU FAIL and ROM FAIL
CPU FAIL means that the processing unit has failed internal tests. ROM FAIL means that the internal memory has failed.
1. Cycle the power. Leave the transmitter without power for at least 30 seconds before returning power to it.
2. If cycling the power fails to clear the error message, the CPu board probably needs replacing. Call the factory for assistance.
10.8.10 AdC Error
AdC Error means the analog to digital converter has failed.
1. Verify that sensor wiring is correct and connections are tight. Be sure to check connections at the junction box if one
is being used. See Section 3.0.
2. disconnect sensor(s) and simulate temperature and sensor input.
3. If the transmitter does not respond to simulated signals, the analog PCB has probably failed. Call the factory for assistance.

MODEL 5081-T

SECTION 11.0
MAINTENANCE

SECTION 11.0
MAINTENANCE
11.1 OvERvIEw

11.3 TRANSMITTER MAINTENANCE

Maintenance consists of "Preventative" and
"Corrective" measures.

Periodically clean the transmitter window with household ammonia or glass cleaner. The detector for the
infrared remote controller is located behind the window at the top of the transmitter face. The window in
front of the detector must be kept clean.

11.2 PREvENTATIvE MAINTENANCE
11.2.1 Transmitter Maintenance. Transmitter maintenance consists of periodic calibration. A monthly calibration is a good starting maintenance schedule. This
schedule can then be fine tuned to the site process.
11.2.2 Sensor Maintenance. Sensor maintenance
consists of periodic cleaning of the electrode.
A weekly cleaning is a good starting maintenance
schedule. This schedule can then be fine tuned to the
site process.
11.2.3 Initiating HOLD Function For Maintenance.
To place the transmitter into the Hold operational
mode prior to servicing the sensor, press the HOLD
key on the IRC (infrared remote control). The message field will respond with a message concerning the
present hold condition. Press the IRC editing key to
toggle to the On condition. Press ENTER to activate
HOLD output.
Hold Mode will maintain the operating current output
at the programmed value regardless of process
changes. Refer to Section 7.2.3, step 4, for instructions on how to set this value.

Most components of the transmitter are replaceable.
Refer to Figure 11-2 and Table 11-1 on the following
page for parts and part numbers.

Hold field Illuminated

F
A
u
L
T

Imposed Current output

5000

µS/cm

H
O
L
D

CALIBRATE

PRoGRAM dIAGNoSE

2 5 0C
ExIT

2 1 . 0 0 mA
%

ENTER

Temperature/Current output segments change to indicate the current output level.
The section of the LCd reserved for hold annunciation
(Refer to Figure 11-1) will display HOLD when the
transmitter is in the Hold Mode.
To return transmitter to normal operation, press HOLD
on the IRC again to access the hold toggling function.
Always calibrate after cleaning or replacing the sensor.
Press the IRC editing key to toggle to the OFF condition. Press ENTER to disengage the HOLD output
function.

FIGURE 11-1. Hold Annunciation

MODEL 5081-T

SECTION 11.0
MAINTENANCE

FIGURE 11-2. Exploded view of Model 5081-T Transmitter
Three screws (part 13 in the drawing) hold the three circuit boards in place. Removing the screws allows the display board (part 2) and the
CPU board (part 3) to be easily removed. A ribbon cable connects the boards. The cable plugs into the CPU board and is permanently
attached to the display board. A 16 pin and socket connector holds the CPU and analog (part 4) boards together. Five screws hold the terminal block (part 5) to the center housing (part 7), and the 16 pins on the terminal block mate with 16 sockets on the back side of the analog board. Use caution when separating the terminal block from the analog board. The pin and socket connection is tight.

TABLE 11-1. Replacement Parts for Model 5081-T Transmitter
Location in
drawing
1

PN
23992-06

23992-07

2
5
6
7
8
9
10
12
13

23652-01
33337-02
23593-01
33360-00
33362-00
6560135
9550187
note
note

14
15
16

33342-00
33343-00
note

Description
PCB stack for 5081-T-HT consisting of the CPu (part 3) and analog (part 4)
boards, display board is not included, CPu and analog boards are factorycalibrated as a unit and cannot be ordered separately
PCB stack for 5081-T-FF consisting of the CPu (part 3) and analog (part 4)
boards, display board is not included, CPu and analog boards are factorycalibrated as a unit and cannot be ordered separately
LCd display PCB
Terminal block
Enclosure cover, front with glass window
Enclosure, center housing
Enclosure cover, rear
desiccant in bag, one each
o-ring (2-252), one, front and rear covers each require an o-ring
Screw, 8-32 x 0.5 inch, for attaching terminal block to center housing
Screw, 8-32 x 1.75 inch, for attaching circuit board stack to center
housing
Cover lock
Locking bracket nut
Screw, 10-24 x 0.38 inch, for attaching cover lock and locking bracket
nut to center housing

NoTE: For information only. Screws cannot be purchased from Rosemount Analytical.
* Weights are rounded up to the nearest whole pound or 0.5 kg.

Shipping
weight
1 lb/0.5 kg

1 lb/0.5 kg

1
1
3
4
3
1
1

lb/0.5
lb/0.5
lb/1.5
lb/1.5
lb/1.0
lb/0.5
lb/0.5
*
*

kg
kg
kg
kg
kg
kg
kg

1 lb/0.5 kg
1 lb/0.5 kg
*

MODEL 5081-T

SECTION 12.0
THEORy OF OPERATION

SECTION 12.0
THEORy OF OPERATION
12.1 OvERvIEw

12.4 OUTPUT LOGIC

This section is a general description of how the Model
5081-T Transmitter operates. This section is for those
users who desire a greater understanding of the transmitter’s operation.

Normal transmitter operation specifies that the output
tracks the process. However, the transmitter can be put
into other modes of operation.

12.2 CONDUCTIvITy
The conductivity sensor produces a “conductance signal”
that is proportional to the conductivity of the process
solution. The transmitter subtracts a baseline zero conductivity signal from the sensor signal and multiplies the
result by the cell constant and the cell factor. This
absolute conductivity is then corrected to the reference
temperature (usually 25°C) using the process temperature measured by a RTd located in the conductivity sensor. In the “n SALt”, “CAtion” and “rStvty” modes, the
Model 5081-T automatically calculates the amount of
correction needed.
In conductivity mode “LInEAr”, the microprocessor also
adjusts the amount of correction required for temperature
compensation by means of a temperature slope adjustment. This slope may be adjusted between 0 to 5%/°C
either manually via the Infrared Remote Control Keypad
or automatically during bench or process calibration. This
slope controls the amount of correction required in the
temperature compensation circuit, and is specific to the
process, giving you the most accurate conductivity reading possible.

12.3 HART COMMUNICATION
A ModAC (An application specific Integrated Circuit) is
connected across the current loop to read and transmit
the superimposed HART communications. The transmitter communicates via the HART protocol which uses an
industry standard BELL 202 frequency shift keying (FSK)
technique. This FSK signal is an AC signal, whose frequency is shifted higher or lower, depending upon the
condition of the digital signal (High or Low). This communication conforms to the Rosemount HART® specification and is used to configure and interrogate the transmitter.

These modes are:
Fault Mode (in the event of a fault). Sets the transmitter output to the value set during configuration. (Between
3.80 and 22.00mA). This mode is over-ridden by the
HOLD or TEST modes.
Hold Mode (manually placed in hold). Holds the output
current to the value set during configuration. This value
may be between 3.80 and 22.00 mA.
Hold mode supersedes the fault mode value. The current
output measurement is “Frozen” while the transmitter is
in the Hold Mode.
Test Mode (manually placed to test output). Can only
be accessed through the Program menu, and is only
active during the time the prompt is visible.
output is set to the entered value and supersedes the
Hold and Fault modes, if such exist.
Test mode also disables the normal timeout feature (2
minutes after the last keystroke is made) for 20 minutes.
Timeout. The display will normally timeout and default to
the Main display two (2) minutes after the last keystroke
is made.
While the output is being tested, or if a 2-point calibration
is being performed, the timeout is adjusted to 20 minutes.
If a custom curve is being programmed, no timeout will
be applied.

MODEL 5081-T

SECTION 13.0
RETURN OF MATERIAL

SECTION 13.0
RETURN OF MATERIAL
13.1 GENERAL.

13.1 NON-wARRANTy REPAIR.

To expedite the repair and return of instruments, proper
communication between the customer and the factory
is important. Call 1-949-757-8500 for a R e tu r n
Materials Authorization (RMA) number.

The following is the procedure for returning for repair
instruments that are no longer under warranty:
1.

Call Rosemount Analytical for authorization.

Supply the purchase order number, and make
sure to provide the name and telephone number
of the individual to be contacted should additional
information be needed.

do Steps 3 and 4 of Section 13.2.

13.2 wARRANTy REPAIR.
The following is the procedure for returning instruments still under warranty:
1.

Call Rosemount Analytical for authorization.

To verify warranty, supply the factory sales order
number or the original purchase order number. In
the case of individual parts or sub-assemblies, the
serial number on the unit must be supplied.

Carefully package the materials and enclose your
“Letter of Transmittal” (see Warranty). If possible,
pack the materials in the same manner as they
were received.

Send the package prepaid to:

NOTE
Consult the factory for additional information regarding service or repair.

Emerson Process Management
Rosemount Analytical
2400 Barranca Parkway
Irvine, CA 92606
Attn: Factory Repair
RMA No. ____________
Mark the package: Returned for Repair
Model No. ____

wARRANTy
Goods and part(s) (excluding consumables) manufactured by Seller are warranted to be free from defects in workmanship and material under normal use and service for a period of twelve (12) months from the date of shipment by Seller.
Consumables, pH electrodes, membranes, liquid junctions, electrolyte, o-rings, etc. are warranted to be free from defects
in workmanship and material under normal use and service for a period of ninety (90) days from date of shipment by Seller.
Goods, part(s) and consumables proven by Seller to be defective in workmanship and / or material shall be replaced or
repaired, free of charge, F.o.B. Seller's factory provided that the goods, parts(s), or consumables are returned to Seller's
designated factory, transportation charges prepaid, within the twelve (12) month period of warranty in the case of goods
and part(s), and in the case of consumables, within the ninety (90) day period of warranty. This warranty shall be in effect
for replacement or repaired goods, part(s) and consumables for the remaining portion of the period of the twelve (12)
month warranty in the case of goods and part(s) and the remaining portion of the ninety (90) day warranty in the case of
consumables. A defect in goods, part(s) and consumables of the commercial unit shall not operate to condemn such commercial unit when such goods, parts(s) or consumables are capable of being renewed, repaired or replaced.
The Seller shall not be liable to the Buyer, or to any other person, for the loss or damage, directly or indirectly, arising
from the use of the equipment or goods, from breach of any warranty or from any other cause. All other warranties,
expressed or implied are hereby excluded.
IN CoNSIdERATIoN oF THE STATEd PuRCHASE PRICE oF THE GoodS, SELLER GRANTS oNLY THE ABoVE
STATEd EXPRESS WARRANTY. No oTHER WARRANTIES ARE GRANTEd INCLudING, BuT NoT LIMITEd To,
EXPRESS ANd IMPLIEd WARRANTIES oF MERCHANTABILITY ANd FITNESS FoR A PARTICuLAR PuRPoSE.

RETURN OF MATERIAL
Material returned for repair, whether in or out of warranty, should be shipped prepaid to:
Emerson Process Management
Rosemount Analytical
2400 Barranca Parkway
Irvine, CA 92606

The shipping container should be marked:
Return for Repair
Model _______________________________
The returned material should be accompanied by a letter of transmittal which should include the following information
(make a copy of the "Return of Materials Request" found on the last page of the Manual and provide the following thereon):
1. Location type of service, and length of time of service of the device.
2. description of the faulty operation of the device and the circumstances of the failure.
3. Name and telephone number of the person to contact if there are questions about the returned material.
4. Statement as to whether warranty or non-warranty service is requested.
5. Complete shipping instructions for return of the material.
Adherence to these procedures will expedite handling of the returned material and will prevent unnecessary additional
charges for inspection and testing to determine the problem with the device.
If the material is returned for out-of-warranty repairs, a purchase order for repairs should be enclosed.

This page intentionally left blank.

LIQ_MAN_5081-T
Rev. G
January 2015

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Emerson Process Management

2400 Barranca Parkway
Irvine, CA 92606 USA
Tel: (949) 757-8500
Fax: (949) 474-7250

The Emerson logo is a trademark and service mark of Emerson Electric Co. Brand name is a mark
of one of the Emerson Process Management family of companies. All other marks are the property
of their respective owners.

The contents of this publication are presented for information purposes only, and while effort has
been made to ensure their accuracy, they are not to be construed as warranties or guarantees,
express or implied, regarding the products or services described herein or their use or applicability.
All sales are governed by our terms and conditions, which are available on request. We reserve the
right to modify or improve the designs or specifications of our products at any time without notice.

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51 4081P 5081 T Liq Manual 5081T

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